A system of coplanar forces is in equilibrium when%!

Both force polygon" and funicular polygon close

A body of weight ‚Äö√Ñ√≤w‚Äö√Ñ√¥ placed on an inclined plane is acted upon by a force ‚Äö√Ñ√≤P‚Äö√Ñ√¥ parallel to the plane which causes the body just to move up the plane. If the angle of inclination of the plane is ‚Äö√Ñ√≤≈í‚àè‚Äö√Ñ√¥ and angle of friction is ‚Äö√Ñ√≤≈ì√ú‚Äö√Ñ√¥, the minimum value of ‚Äö√Ñ√≤P‚Äö√Ñ√¥, is%!

w cos (≈í‚àè + ≈ì√ú)/cos ≈ì√ú

w sin (≈ì√ú - ≈í‚àè)/cos ≈ì√ú

w sin (≈í‚àè - ≈ì√ú)/cos ≈ì√ú

w cos (≈í‚àè + ≈ì√ú)/cos ≈ì√ú

w sin≈í‚àè cos(≈í‚àè - ≈ì√ú)/sin ≈ì√ú

The masses of two balls are in the ratio of 2 : 1 and their respective velocities are in the ratio of 1 : 2 but in opposite direction before impact. If the coefficient of restitution is ¬¨Œ©, the velocities of separation of the balls will be equal to%!

Original velocity in the same direction

Half the original velocity in the same direction

Half the original velocity in the opposite direction

Original velocity in the opposite direction

If a particle moves with a uniform angular velocity ‚Äö√Ñ√≤≈ì√¢‚Äö√Ñ√¥ radians/sec along the circumference of a circle of radius ‚Äö√Ñ√≤r‚Äö√Ñ√¥, the equation for the velocity of the particle, is%!

v = ≈ì√¢ ‚Äö√ √∂(y¬¨‚â§ - r¬¨‚â§)

y = ≈ì√¢ ‚Äö√ √∂(y - r)

v = ≈ì√¢ ‚Äö√ √∂(r¬¨‚â§ + y¬¨‚â§)

v = ≈ì√¢ ‚Äö√ √∂(r¬¨‚â§ - y¬¨‚â§)

Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by%!

The diagonal of the parallelogram which does not pass through the point of intersection of the forces

The diagonal of the parallelogram which passes through the point of intersection of the forces

*$_A particle moving with a simple harmonic motion, attains its maximum velocity when it passes?

Through a point at half amplitude

The extreme point of the oscillation

Through a point at half amplitude

*$_A stone is whirled in a vertical circle, the tension in the string, is maximum?

When the stone is at the highest position

When the stone is at the lowest position

*$_The ratio of the ranges on the inclined plane with motion upward and with motion downward for a given velocity, angle of projection will be?

cos (≈í¬± - ≈í‚â§)/cos (≈í¬± + ≈í‚â§)

sin (≈í¬± + ≈í‚â§)/sin (≈í¬± - ≈í‚â§)

sin (≈í¬± - ≈í‚â§)/sin (≈í¬± + ≈í‚â§)

cos (≈í¬± - ≈í‚â§)/cos (≈í¬± + ≈í‚â§)

tan (≈í¬± - ≈í‚â§)/tan (≈í¬± + ≈í‚â§)

*$_Equation of motion of a point in a straight line, is?

S = ut + ¬¨Œ© ft¬¨‚â§

2fS = v¬¨‚â§ - u¬¨‚â§

*$_For a simple pendulum, the period of one oscillation is?

2≈ì√Ñ ‚Äö√ √∂(g/2l)

2≈ì√Ñ ‚Äö√ √∂(l/2g)

2≈ì√Ñ ‚Äö√ √∂(2g/l)

2≈ì√Ñ ‚Äö√ √∂(l/g)

2≈ì√Ñ ‚Äö√ √∂(g/2l)

*$_A retarding force on a body does not?

Introduce the motion of the body

*/*_Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by?

The diagonal of the parallelogram which does not pass through the point of intersection of the forces

The diagonal of the parallelogram which passes through the point of intersection of the forces

*/*_The forces which meet at one point and have their lines of action in different planes are called?

Non-coplanar non-current forces

*/*_The masses of two balls are in the ratio of 2 : 1 and their respective velocities are in the ratio of 1 : 2 but in opposite direction before impact. If the coefficient of restitution is ¬¨Œ©, the velocities of separation of the balls will be equal to?

Original velocity in the same direction

Half the original velocity in the same direction

Half the original velocity in the opposite direction

Original velocity in the opposite direction

*/*_A body of weight ‚Äö√Ñ√≤w‚Äö√Ñ√¥ placed on an inclined plane is acted upon by a force ‚Äö√Ñ√≤P‚Äö√Ñ√¥ parallel to the plane which causes the body just to move up the plane. If the angle of inclination of the plane is ‚Äö√Ñ√≤≈í‚àè‚Äö√Ñ√¥ and angle of friction is ‚Äö√Ñ√≤≈ì√ú‚Äö√Ñ√¥, the minimum value of ‚Äö√Ñ√≤P‚Äö√Ñ√¥, is?

w cos (≈í‚àè + ≈ì√ú)/cos ≈ì√ú

w sin (≈ì√ú - ≈í‚àè)/cos ≈ì√ú

w sin (≈í‚àè - ≈ì√ú)/cos ≈ì√ú

w cos (≈í‚àè + ≈ì√ú)/cos ≈ì√ú

w sin≈í‚àè cos(≈í‚àè - ≈ì√ú)/sin ≈ì√ú

*/*_If a particle moves with a uniform angular velocity ‚Äö√Ñ√≤≈ì√¢‚Äö√Ñ√¥ radians/sec along the circumference of a circle of radius ‚Äö√Ñ√≤r‚Äö√Ñ√¥, the equation for the velocity of the particle, is?

v = ≈ì√¢ ‚Äö√ √∂(y¬¨‚â§ - r¬¨‚â§)

y = ≈ì√¢ ‚Äö√ √∂(y - r)

v = ≈ì√¢ ‚Äö√ √∂(r¬¨‚â§ + y¬¨‚â§)

v = ≈ì√¢ ‚Äö√ √∂(r¬¨‚â§ - y¬¨‚â§)

*/*_The centre of gravity of the trapezium as shown in below figure from the side is at a distance of?

(h/3) ‚àö√≥ [(2b + a)/(b + a)]

(h/3) ‚àö√≥ [(b + 2a)/(b + a)]

(h/3) ‚àö√≥ [(2b + a)/(b + a)]

(h/2) ‚àö√≥ [(b + 2a)/(b + a)]

(h/2) ‚àö√≥ [(2b + a)/(b + a)]

*/*_A system of coplanar forces is in equilibrium when?

Both force polygon" and funicular polygon close

*/*_The angles between two forces to make their resultant a minimum and a maximum respectively are?

180¬¨‚àû and 90¬¨‚àû

90¬¨‚àû and 180¬¨‚àû

180¬¨‚àû and 0¬¨‚àû

314 + Mcqs in Applied Mechanics And Graphic Statics in Civil Engineering Page 1 McqOptions

1.	A system of coplanar forces is in equilibrium when%!
A.	Force polygon closes
B.	Funicular polygon closes
C.	Both force polygon" and funicular polygon close
D.	All the forces are concurrent
Answer» D. All the forces are concurrent

Discussion

2.	The motion of a particle is described by the relation x = t¬¨‚â§- 10t + 30, where x is in meters and t in seconds. The total distance travelled by the particle from t = 0 to t = 10 seconds would be%!
A.	Zero
B.	30 m
C.	50 m
D.	60 m
Answer» B. 30 m

Discussion

3.	A body of weight ‚Äö√Ñ√≤w‚Äö√Ñ√¥ placed on an inclined plane is acted upon by a force ‚Äö√Ñ√≤P‚Äö√Ñ√¥ parallel to the plane which causes the body just to move up the plane. If the angle of inclination of the plane is ‚Äö√Ñ√≤≈í‚àè‚Äö√Ñ√¥ and angle of friction is ‚Äö√Ñ√≤≈ì√ú‚Äö√Ñ√¥, the minimum value of ‚Äö√Ñ√≤P‚Äö√Ñ√¥, is%!
A.	w sin (≈ì√ú - ≈í‚àè)/cos ≈ì√ú
B.	w sin (≈í‚àè - ≈ì√ú)/cos ≈ì√ú
C.	w cos (≈í‚àè + ≈ì√ú)/cos ≈ì√ú
D.	w sin≈í‚àè cos(≈í‚àè - ≈ì√ú)/sin ≈ì√ú
Answer» C. w cos (≈í‚àè + ≈ì√ú)/cos ≈ì√ú

Discussion

4.	The masses of two balls are in the ratio of 2 : 1 and their respective velocities are in the ratio of 1 : 2 but in opposite direction before impact. If the coefficient of restitution is ¬¨Œ©, the velocities of separation of the balls will be equal to%!
A.	Original velocity in the same direction
B.	Half the original velocity in the same direction
C.	Half the original velocity in the opposite direction
D.	Original velocity in the opposite direction
Answer» E.

Discussion

5.	A satellite moves in its orbit around the earth due to%!
A.	Gravitational force
B.	Centripetal force
C.	Centrifugal force
D.	None of these
Answer» C. Centrifugal force

Discussion

6.	If a particle moves with a uniform angular velocity ‚Äö√Ñ√≤≈ì√¢‚Äö√Ñ√¥ radians/sec along the circumference of a circle of radius ‚Äö√Ñ√≤r‚Äö√Ñ√¥, the equation for the velocity of the particle, is%!
A.	v = ≈ì√¢ ‚Äö√ √∂(y¬¨‚â§ - r¬¨‚â§)
B.	y = ≈ì√¢ ‚Äö√ √∂(y - r)
C.	v = ≈ì√¢ ‚Äö√ √∂(r¬¨‚â§ + y¬¨‚â§)
D.	v = ≈ì√¢ ‚Äö√ √∂(r¬¨‚â§ - y¬¨‚â§)
Answer» E.

Discussion

7.	Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by%!
A.	Its longer side
B.	Its shorter side
C.	The diagonal of the parallelogram which does not pass through the point of intersection of the forces
D.	The diagonal of the parallelogram which passes through the point of intersection of the forces
Answer» E.

Discussion

8.	The beam shown in below figure is supported by a hinge at ‚Äö√Ñ√≤A‚Äö√Ñ√¥ and a roller at ‚Äö√Ñ√≤B‚Äö√Ñ√¥. The reaction RA of the hinged support ‚Äö√Ñ√≤A‚Äö√Ñ√¥ of the beam, is%!
A.	10.8 t
B.	10.6 t
C.	10.4 t
D.	10.2 t
Answer» E.

Discussion

9.	The resultant of two forces acting at right angles is 5 kgf and if they act at an angle of 60¬¨‚àû, it is 37 kgf. The magnitudes of the forces are:%!
A.	2 kgf, 3 kgf
B.	3 kgf, 4 kgf
C.	4 kgf, 5 kgf
D.	5 kgf, 3 kgf
Answer» C. 4 kgf, 5 kgf

Discussion

10.	A force P of 50 N and another force Q of unknown magnitude act at 90¬¨‚àû to each other. They are balanced by a force of 130 N. The magnitude of Q is%!
A.	60 N
B.	80 N
C.	100 N
D.	120 N
Answer» E.

Discussion

11.	The diagram showing the point of application and line of action of forces in their plane is called%!
A.	Vector diagram
B.	Space diagram
C.	Force diagram
D.	Funicular diagram
Answer» C. Force diagram

Discussion

12.	A symmetrical body is rotating about its axis of symmetry, its moment of inertia about the axis of rotation being 2 kg -m2 and its rate of rotation 2 revolutions/see. The angular momentum of the body in kg-m2/sec is%!
A.	4
B.	6 7i
C.	8TC
D.	8
Answer» D. 8

Discussion

13.	*$_When two forces, each equal to P, act at 90¬¨‚àû to each other, then the resultant will be?
A.	P
B.	P‚Äö√ √∂2
C.	P/‚Äö√ √∂2
D.	2P
Answer» C. P/‚Äö√ √∂2

Discussion

14.	*$_A body is dropped from a height of 100 m and at the same time another body is projected vertically upward with a velocity of 10 m/sec. The two particles will?
A.	Never meet
B.	Meet after 1 sec
C.	Meet after 5 sec
D.	Meet after 10 sec
Answer» E.

Discussion

15.	*$_A particle moving with a simple harmonic motion, attains its maximum velocity when it passes?
A.	The extreme point of the oscillation
B.	Through the mean position
C.	Through a point at half amplitude
D.	None of these
Answer» C. Through a point at half amplitude

Discussion

16.	*$_Two forces of 6 Newtons and 8 Newtons which are acting at right angles to each other, will have a resultant of?
A.	5 Newtons
B.	8 Newtons
C.	10 Newtons
D.	12 Newtons
Answer» D. 12 Newtons

Discussion

17.	*$_A stone is whirled in a vertical circle, the tension in the string, is maximum?
A.	When the string is horizontal
B.	When the stone is at the highest position
C.	When the stone is at the lowest position
D.	At all the positions
Answer» D. At all the positions

Discussion

18.	*$_A body of weight 14 g appears to weight 13 g when weighed by a spring balance in a moving lift. The acceleration of the lift at that moment was?
A.	0.5 m/sec¬¨‚â§
B.	0.7 m/sec¬¨‚â§
C.	1 m/sec¬¨‚â§
D.	1 cm/sec¬¨‚â§
Answer» C. 1 m/sec¬¨‚â§

Discussion

19.	*$_A uniform rod 9 m long weighing 40 kg is pivoted at a point 2 m from one end where a weight of 120 kg is suspended. The required force acting at the end in a direction perpendicular to rod to keep it equilibrium, at an inclination 60¬¨‚àû with horizontal, is?
A.	40 kg
B.	60 kg
C.	10 kg
D.	100 kg
Answer» D. 100 kg

Discussion

20.	*$_The motion of a particle moving with S.H.M. from an extremity to the other, constitutes?
A.	Half an oscillation
B.	One full oscillation
C.	Two oscillations
D.	None of these
Answer» B. One full oscillation

Discussion

21.	*$_The ratio of the ranges on the inclined plane with motion upward and with motion downward for a given velocity, angle of projection will be?
A.	sin (≈í¬± + ≈í‚â§)/sin (≈í¬± - ≈í‚â§)
B.	sin (≈í¬± - ≈í‚â§)/sin (≈í¬± + ≈í‚â§)
C.	cos (≈í¬± - ≈í‚â§)/cos (≈í¬± + ≈í‚â§)
D.	tan (≈í¬± - ≈í‚â§)/tan (≈í¬± + ≈í‚â§)
Answer» C. cos (≈í¬± - ≈í‚â§)/cos (≈í¬± + ≈í‚â§)

Discussion

22.	*$_The apparent weight of a man in a moving lift is less than his real weight when it is going down with?
A.	Uniform speed
B.	An acceleration
C.	Linear momentum
D.	Retardation
Answer» C. Linear momentum

Discussion

23.	*$_The displacement of a particle which moves along a straight line is given by S = 4t¬¨‚â• + 3t¬¨‚â§- 10 where ‚Äö√Ñ√≤S‚Äö√Ñ√¥ is in meters and t is in seconds. The time taken by the particle to acquire a velocity of 18 m/sec from rest, is?
A.	¬¨Œ© sec
B.	1 sec
C.	1.2 sec
D.	1.5 sec
Answer» C. 1.2 sec

Discussion

24.	*$_Equation of motion of a point in a straight line, is?
A.	v = u + ft
B.	S = ut + ¬¨Œ© ft¬¨‚â§
C.	2fS = v¬¨‚â§ - u¬¨‚â§
D.	All the above
Answer» E.

Discussion

25.	*$_The moment of inertia of a hollow circular section whose external diameter is 8 cm and internal diameter is 6 cm, about centroidal axis, is?
A.	437.5 cm‚Äö√Ö¬•
B.	337.5 cm‚Äö√Ö¬•
C.	237.5 cm‚Äö√Ö¬•
D.	137.5 cm‚Äö√Ö¬•
Answer» E.

Discussion

26.	*$_In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is?
A.	30
B.	50
C.	60
D.	80
Answer» C. 60

Discussion

27.	*$_Minimum potential energy of a system will be in the position of?
A.	Stable equilibrium
B.	Unstable equilibrium
C.	Neutral equilibrium
D.	All of the above
Answer» B. Unstable equilibrium

Discussion

28.	*$_For a simple pendulum, the period of one oscillation is?
A.	2≈ì√Ñ ‚Äö√ √∂(l/2g)
B.	2≈ì√Ñ ‚Äö√ √∂(2g/l)
C.	2≈ì√Ñ ‚Äö√ √∂(l/g)
D.	2≈ì√Ñ ‚Äö√ √∂(g/2l)
Answer» D. 2≈ì√Ñ ‚Äö√ √∂(g/2l)

Discussion

29.	*$_The reaction at the central support B of the beam ABC hinged at D shown in below figure is?
A.	2 t
B.	5.8 t
C.	0.2 t
D.	3.5 t
Answer» C. 0.2 t

Discussion

30.	*$_A solid sphere of mass M and radius R rolls down a plane inclined at 0 with the horizontal. The acceleration of sphere is (where g is acceleration due to gravity)?
A.	(1/3) g sin0
B.	(2/5) g sin 0
C.	(3/7) g sin 0
D.	(5/7) g sin0
Answer» E.

Discussion

31.	*$_A projectile has maximum range of 40 m on a horizontal plane. If angle of projection is a and the time of flight is 1 second, then sin a must be about (Assume g = 10 m/sec¬¨‚â§)?
A.	1/4
B.	1/3
C.	1/2
D.	1/5
Answer» B. 1/3

Discussion

32.	*$_A retarding force on a body does not?
A.	Change the motion of the body
B.	Retard the motion of the body
C.	Introduce the motion of the body
D.	None of these
Answer» C. Introduce the motion of the body

Discussion

33.	/_Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by?
A.	Its longer side
B.	Its shorter side
C.	The diagonal of the parallelogram which does not pass through the point of intersection of the forces
D.	The diagonal of the parallelogram which passes through the point of intersection of the forces
Answer» E.

Discussion

34.	/_The piston of a steam engine moves with a simple harmonic motion. The crank rotates 120 r.p.m. and the stroke length is 2 meters. The linear velocity of the piston when it is at a distance of 0.5 metre from the centre, is?
A.	5.88 m/sec
B.	8.88 m/sec
C.	10.88 m/sec
D.	12.88 m/sec
Answer» D. 12.88 m/sec

Discussion

35.	/_The forces which meet at one point and have their lines of action in different planes are called?
A.	Coplanar non-concurrent forces
B.	Non-coplanar concurrent forces
C.	Non-coplanar non-current forces
D.	Intersecting forces
Answer» C. Non-coplanar non-current forces

Discussion

36.	/_The rate of change of displacement of a body with respect to its surrounding, is known?
A.	Velocity
B.	Acceleration
C.	Speed
D.	None of these
Answer» D. None of these

Discussion

37.	/_If two forces are in equilibrium, then the forces must (i) Be equal in magnitude (ii) Be opposite in sense (iii) Act along the same line?
A.	(i) and (ii)
B.	(i) and (iii)
C.	Only (i)
D.	All (i), (ii) and (iii)
Answer» E.

Discussion

38.	/_The frequency of oscillation on moon as compared to that on earth, will be?
A.	2.44 times more
B.	2.44 times less
C.	3 times less
D.	3 times more
Answer» C. 3 times less

Discussion

39.	/_The member which does not carry zero force in the structure shown in below figure, is?
A.	ED
B.	DC
C.	BC
D.	BD
Answer» E.

Discussion

40.	/_The motion of a particle is described by the relation x = t¬¨‚â§- 10t + 30, where x is in meters and t in seconds. The total distance travelled by the particle from t = 0 to t = 10 seconds would be?
A.	Zero
B.	30 m
C.	50 m
D.	60 m
Answer» B. 30 m

Discussion

41.	/_The masses of two balls are in the ratio of 2 : 1 and their respective velocities are in the ratio of 1 : 2 but in opposite direction before impact. If the coefficient of restitution is ¬¨Œ©, the velocities of separation of the balls will be equal to?
A.	Original velocity in the same direction
B.	Half the original velocity in the same direction
C.	Half the original velocity in the opposite direction
D.	Original velocity in the opposite direction
Answer» E.

Discussion

42.	/_A body of weight ‚Äö√Ñ√≤w‚Äö√Ñ√¥ placed on an inclined plane is acted upon by a force ‚Äö√Ñ√≤P‚Äö√Ñ√¥ parallel to the plane which causes the body just to move up the plane. If the angle of inclination of the plane is ‚Äö√Ñ√≤≈í‚àè‚Äö√Ñ√¥ and angle of friction is ‚Äö√Ñ√≤≈ì√ú‚Äö√Ñ√¥, the minimum value of ‚Äö√Ñ√≤P‚Äö√Ñ√¥, is?
A.	w sin (≈ì√ú - ≈í‚àè)/cos ≈ì√ú
B.	w sin (≈í‚àè - ≈ì√ú)/cos ≈ì√ú
C.	w cos (≈í‚àè + ≈ì√ú)/cos ≈ì√ú
D.	w sin≈í‚àè cos(≈í‚àè - ≈ì√ú)/sin ≈ì√ú
Answer» C. w cos (≈í‚àè + ≈ì√ú)/cos ≈ì√ú

Discussion

43.	/_If a particle moves with a uniform angular velocity ‚Äö√Ñ√≤≈ì√¢‚Äö√Ñ√¥ radians/sec along the circumference of a circle of radius ‚Äö√Ñ√≤r‚Äö√Ñ√¥, the equation for the velocity of the particle, is?
A.	v = ≈ì√¢ ‚Äö√ √∂(y¬¨‚â§ - r¬¨‚â§)
B.	y = ≈ì√¢ ‚Äö√ √∂(y - r)
C.	v = ≈ì√¢ ‚Äö√ √∂(r¬¨‚â§ + y¬¨‚â§)
D.	v = ≈ì√¢ ‚Äö√ √∂(r¬¨‚â§ - y¬¨‚â§)
Answer» E.

Discussion

44.	/_A satellite moves in its orbit around the earth due to?
A.	Gravitational force
B.	Centripetal force
C.	Centrifugal force
D.	None of these
Answer» C. Centrifugal force

Discussion

45.	/_The centre of gravity of the trapezium as shown in below figure from the side is at a distance of?
A.	(h/3) ‚àö√≥ [(b + 2a)/(b + a)]
B.	(h/3) ‚àö√≥ [(2b + a)/(b + a)]
C.	(h/2) ‚àö√≥ [(b + 2a)/(b + a)]
D.	(h/2) ‚àö√≥ [(2b + a)/(b + a)]
Answer» B. (h/3) ‚àö√≥ [(2b + a)/(b + a)]

Discussion

46.	/_A system of coplanar forces is in equilibrium when?
A.	Force polygon closes
B.	Funicular polygon closes
C.	Both force polygon" and funicular polygon close
D.	All the forces are concurrent
Answer» D. All the forces are concurrent

Discussion

47.	/_If ‚Äö√Ñ√≤l‚Äö√Ñ√¥ is the span of a light suspension bridge who‚Äö√Ñ√¥s each cable carries total weight (w) and the central dip is ‚Äö√Ñ√≤y‚Äö√Ñ√¥, the horizontal pull at each support, is?
A.	wl/4y
B.	wl/8y
C.	wl/2y
D.	wl
Answer» C. wl/2y

Discussion

48.	/_The unit of moments in M.K.S system, is?
A.	kg.m
B.	kg/m2
C.	kg/sec2
D.	kg/sec
Answer» B. kg/m2

Discussion

49.	/_Two parallel forces 20 kg and 15 kg act. In order that the distance of the resultant from 20 kg force may be the same as that of the former resultant was from 15 kg, the 20 kg force is diminished by?
A.	5.5 kg
B.	6.25 kg
C.	8.75 kg
D.	10.5 kg
Answer» D. 10.5 kg

Discussion

50.	/_The angles between two forces to make their resultant a minimum and a maximum respectively are?
A.	0¬¨‚àû and 90¬¨‚àû
B.	180¬¨‚àû and 90¬¨‚àû
C.	90¬¨‚àû and 180¬¨‚àû
D.	180¬¨‚àû and 0¬¨‚àû
Answer» E.

Discussion

Explore topic-wise MCQs in Civil Engineering.

A system of coplanar forces is in equilibrium when%!

The motion of a particle is described by the relation x = t¬¨‚â§- 10t + 30, where x is in meters and t in seconds. The total distance travelled by the particle from t = 0 to t = 10 seconds would be%!

The masses of two balls are in the ratio of 2 : 1 and their respective velocities are in the ratio of 1 : 2 but in opposite direction before impact. If the coefficient of restitution is ¬¨Œ©, the velocities of separation of the balls will be equal to%!

A satellite moves in its orbit around the earth due to%!

If a particle moves with a uniform angular velocity ‚Äö√Ñ√≤≈ì√¢‚Äö√Ñ√¥ radians/sec along the circumference of a circle of radius ‚Äö√Ñ√≤r‚Äö√Ñ√¥, the equation for the velocity of the particle, is%!

Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by%!

The beam shown in below figure is supported by a hinge at ‚Äö√Ñ√≤A‚Äö√Ñ√¥ and a roller at ‚Äö√Ñ√≤B‚Äö√Ñ√¥. The reaction RA of the hinged support ‚Äö√Ñ√≤A‚Äö√Ñ√¥ of the beam, is%!

The resultant of two forces acting at right angles is 5 kgf and if they act at an angle of 60¬¨‚àû, it is 37 kgf. The magnitudes of the forces are:%!

A force P of 50 N and another force Q of unknown magnitude act at 90¬¨‚àû to each other. They are balanced by a force of 130 N. The magnitude of Q is%!

The diagram showing the point of application and line of action of forces in their plane is called%!

A symmetrical body is rotating about its axis of symmetry, its moment of inertia about the axis of rotation being 2 kg -m2 and its rate of rotation 2 revolutions/see. The angular momentum of the body in kg-m2/sec is%!

*$_When two forces, each equal to P, act at 90¬¨‚àû to each other, then the resultant will be?

*$_A body is dropped from a height of 100 m and at the same time another body is projected vertically upward with a velocity of 10 m/sec. The two particles will?

*$_A particle moving with a simple harmonic motion, attains its maximum velocity when it passes?

*$_Two forces of 6 Newtons and 8 Newtons which are acting at right angles to each other, will have a resultant of?

*$_A stone is whirled in a vertical circle, the tension in the string, is maximum?

*$_A body of weight 14 g appears to weight 13 g when weighed by a spring balance in a moving lift. The acceleration of the lift at that moment was?

*$_A uniform rod 9 m long weighing 40 kg is pivoted at a point 2 m from one end where a weight of 120 kg is suspended. The required force acting at the end in a direction perpendicular to rod to keep it equilibrium, at an inclination 60¬¨‚àû with horizontal, is?

*$_The motion of a particle moving with S.H.M. from an extremity to the other, constitutes?

*$_The ratio of the ranges on the inclined plane with motion upward and with motion downward for a given velocity, angle of projection will be?

*$_The apparent weight of a man in a moving lift is less than his real weight when it is going down with?

*$_The displacement of a particle which moves along a straight line is given by S = 4t¬¨‚â• + 3t¬¨‚â§- 10 where ‚Äö√Ñ√≤S‚Äö√Ñ√¥ is in meters and t is in seconds. The time taken by the particle to acquire a velocity of 18 m/sec from rest, is?

*$_Equation of motion of a point in a straight line, is?

*$_The moment of inertia of a hollow circular section whose external diameter is 8 cm and internal diameter is 6 cm, about centroidal axis, is?

*$_In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is?

*$_Minimum potential energy of a system will be in the position of?

*$_For a simple pendulum, the period of one oscillation is?

*$_The reaction at the central support B of the beam ABC hinged at D shown in below figure is?

*$_A solid sphere of mass M and radius R rolls down a plane inclined at 0 with the horizontal. The acceleration of sphere is (where g is acceleration due to gravity)?

*$_A projectile has maximum range of 40 m on a horizontal plane. If angle of projection is a and the time of flight is 1 second, then sin a must be about (Assume g = 10 m/sec¬¨‚â§)?

*$_A retarding force on a body does not?

*/*_Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by?

*/*_The piston of a steam engine moves with a simple harmonic motion. The crank rotates 120 r.p.m. and the stroke length is 2 meters. The linear velocity of the piston when it is at a distance of 0.5 metre from the centre, is?

*/*_The forces which meet at one point and have their lines of action in different planes are called?

*/*_The rate of change of displacement of a body with respect to its surrounding, is known?

*/*_If two forces are in equilibrium, then the forces must (i) Be equal in magnitude (ii) Be opposite in sense (iii) Act along the same line?

*/*_The frequency of oscillation on moon as compared to that on earth, will be?

*/*_The member which does not carry zero force in the structure shown in below figure, is?

*/*_The motion of a particle is described by the relation x = t¬¨‚â§- 10t + 30, where x is in meters and t in seconds. The total distance travelled by the particle from t = 0 to t = 10 seconds would be?

*/*_The masses of two balls are in the ratio of 2 : 1 and their respective velocities are in the ratio of 1 : 2 but in opposite direction before impact. If the coefficient of restitution is ¬¨Œ©, the velocities of separation of the balls will be equal to?

*/*_If a particle moves with a uniform angular velocity ‚Äö√Ñ√≤≈ì√¢‚Äö√Ñ√¥ radians/sec along the circumference of a circle of radius ‚Äö√Ñ√≤r‚Äö√Ñ√¥, the equation for the velocity of the particle, is?

*/*_A satellite moves in its orbit around the earth due to?

*/*_The centre of gravity of the trapezium as shown in below figure from the side is at a distance of?

*/*_A system of coplanar forces is in equilibrium when?

*/*_If ‚Äö√Ñ√≤l‚Äö√Ñ√¥ is the span of a light suspension bridge who‚Äö√Ñ√¥s each cable carries total weight (w) and the central dip is ‚Äö√Ñ√≤y‚Äö√Ñ√¥, the horizontal pull at each support, is?

*/*_The unit of moments in M.K.S system, is?

*/*_Two parallel forces 20 kg and 15 kg act. In order that the distance of the resultant from 20 kg force may be the same as that of the former resultant was from 15 kg, the 20 kg force is diminished by?

*/*_The angles between two forces to make their resultant a minimum and a maximum respectively are?

/_Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by?

/_The piston of a steam engine moves with a simple harmonic motion. The crank rotates 120 r.p.m. and the stroke length is 2 meters. The linear velocity of the piston when it is at a distance of 0.5 metre from the centre, is?

/_The forces which meet at one point and have their lines of action in different planes are called?

/_The rate of change of displacement of a body with respect to its surrounding, is known?

/_If two forces are in equilibrium, then the forces must (i) Be equal in magnitude (ii) Be opposite in sense (iii) Act along the same line?

/_The frequency of oscillation on moon as compared to that on earth, will be?

/_The member which does not carry zero force in the structure shown in below figure, is?

/_The motion of a particle is described by the relation x = t¬¨‚â§- 10t + 30, where x is in meters and t in seconds. The total distance travelled by the particle from t = 0 to t = 10 seconds would be?

/_The masses of two balls are in the ratio of 2 : 1 and their respective velocities are in the ratio of 1 : 2 but in opposite direction before impact. If the coefficient of restitution is ¬¨Œ©, the velocities of separation of the balls will be equal to?

/_If a particle moves with a uniform angular velocity ‚Äö√Ñ√≤≈ì√¢‚Äö√Ñ√¥ radians/sec along the circumference of a circle of radius ‚Äö√Ñ√≤r‚Äö√Ñ√¥, the equation for the velocity of the particle, is?

/_A satellite moves in its orbit around the earth due to?

/_The centre of gravity of the trapezium as shown in below figure from the side is at a distance of?

/_A system of coplanar forces is in equilibrium when?

/_If ‚Äö√Ñ√≤l‚Äö√Ñ√¥ is the span of a light suspension bridge who‚Äö√Ñ√¥s each cable carries total weight (w) and the central dip is ‚Äö√Ñ√≤y‚Äö√Ñ√¥, the horizontal pull at each support, is?

/_The unit of moments in M.K.S system, is?

/_Two parallel forces 20 kg and 15 kg act. In order that the distance of the resultant from 20 kg force may be the same as that of the former resultant was from 15 kg, the 20 kg force is diminished by?

/_The angles between two forces to make their resultant a minimum and a maximum respectively are?