MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A particle starts from rest and moves in a straight line whose equation of motion is given by S = 2t3 - t2 - 1. The acceleration of the particle after one sec will be |
| A. | 6 m/sec2 |
| B. | 4 m/sec2 |
| C. | 12 m/sec2 |
| D. | 10 m/sec2 |
| E. | 8 m/sec2 |
| Answer» E. 8 m/sec2 | |
| 2. |
The ratio of moment of inertia of a circular body about x axis to that about y axis is |
| A. | ? |
| B. | ? |
| C. | 1?4 |
| D. | 1 |
| Answer» F. | |
| 3. |
If the distance to electric train is given by Fr = a + bv + cv2 In this equation constant c is likely to cover |
| A. | air resistance |
| B. | track resistance |
| C. | frictional resistance |
| D. | flange resistance |
| E. | 107 dynes |
| Answer» B. track resistance | |
| 4. |
An automobile weighing 2800 lb and travelling at 30 miles/hr, hits a depression in the road which has a radius of curvature of 50 ft. What is the total force to which springs are subjected. |
| A. | 8230 lb |
| B. | 6170 lb |
| C. | 2800 ib |
| D. | 107 dynes |
| E. | 3280 lb |
| Answer» C. 2800 ib | |
| 5. |
What is the maximum force, in Newtons, that will not cause tension? |
| A. | 294 |
| B. | 316 |
| C. | 346 |
| D. | 184 |
| E. | 107 dynes |
| Answer» B. 316 | |
| 6. |
A body having SHM has period of 6 sec and amplitude of 4 mts. Maximum velocity is |
| A. | ?/3 m/s |
| B. | 2?/3 m/s |
| C. | 107 dynes |
| D. | 3? m/s |
| E. | 4?/3 m/s |
| Answer» F. | |
| 7. |
At a roller support the line of reaction and the roller base must be at an angle of |
| A. | 60? |
| B. | 90? |
| C. | not less than 60? |
| D. | not more than 60? |
| E. | 107 dynes |
| Answer» C. not less than 60? | |
| 8. |
In the impact problems the following conditions must always be satisfied |
| A. | The total kinetic energy remains unchanged |
| B. | The total linear momentum remains unchanged |
| C. | The magnitude of the total linear momentum is multiplied by the coefficient of restitution |
| D. | The kinetic energy of the system is reduced by a factor proportional to the coefficient of restitution |
| E. | None of the above |
| Answer» C. The magnitude of the total linear momentum is multiplied by the coefficient of restitution | |
| 9. |
In above case the maximum height attained by the ball would be |
| A. | 49 cm |
| B. | 490 cm |
| C. | 980 cm |
| D. | 1960 cm |
| E. | 100 cm |
| Answer» C. 980 cm | |
| 10. |
A non-reversible machine has efficiency |
| A. | less than 50% |
| B. | nearly 100% |
| C. | between 75% and 99% |
| D. | more than 50% |
| E. | 107 dynes |
| Answer» B. nearly 100% | |
| 11. |
The centroid of the area between the circle x2 + y2 = 16 and the line x + y = 4 will have the coordinates |
| A. | (4, 2) |
| B. | (2, 4) |
| C. | (2.34, 2.34) |
| D. | (1.16, 1.16) |
| E. | None of the above |
| Answer» D. (1.16, 1.16) | |
| 12. |
The weight of an object will be maximum when it is placed at |
| A. | North pole |
| B. | South pole |
| C. | Equator |
| D. | Centre of earth |
| E. | Any of the above loctions |
| Answer» E. Any of the above loctions | |
| 13. |
The law of conservation of mechanical energy is valid |
| A. | Irrespective of the nature of force field |
| B. | Only in gravitational field |
| C. | Only if the total work done by the particle in moving around in a closed trajectory is zero |
| D. | Only if the force is tangential to the trajectory |
| E. | None of the above |
| Answer» D. Only if the force is tangential to the trajectory | |
| 14. |
Rain drops (assumed to be spherical) of radii R1, 2R1, 3R, 4R, |
| A. | all of them will be zero |
| B. | all of them will be same |
| C. | drops of radius R will be maximum |
| D. | drops of radius R will be minimum |
| E. | 107 dynes |
| Answer» E. 107 dynes | |
| 15. |
If there are 3 pulleys in the first system, then the velocity ratio of this system will be |
| A. | 8 |
| B. | 2 |
| C. | 4 |
| D. | 107 dynes |
| E. | 6 |
| Answer» B. 2 | |
| 16. |
The centroid of a triangle is at the inter-section of |
| A. | perpendicular bisectors |
| B. | 107 dynes |
| C. | base and perpendicular from opposite vertex |
| D. | perpendiculars down from the corners |
| E. | medians |
| Answer» F. | |
| 17. |
The y-coordinate of the centroid of the area bounded by the x-axis, the line x = 3 and the parabola y = x2 will be |
| A. | 2.7 |
| B. | 2.55 |
| C. | 107 dynes |
| D. | 2.6 |
| E. | 2.65 |
| Answer» B. 2.55 | |
| 18. |
A flywheel 200 cm in diameter is rotating at 100 rpm. A point one the rim of the flywheel will not have |
| A. | angular velocity |
| B. | centripetal acceleration |
| C. | tangential acceleration |
| D. | all of the above |
| E. | 107 dynes |
| Answer» B. centripetal acceleration | |
| 19. |
A screw jack has 4 threads per inch. The mean radius of the thread is 2.338 inches. The mean diameter of the bearing surface under the cap is 3.25 inches. What is the turning moment required to raise the bload of 150 kg ( |
| A. | 5.61 kg-inch |
| B. | 50.6 kg-inch |
| C. | 107 dynes |
| D. | 30.3 kg-inch |
| E. | 23.6 kg-inch |
| Answer» C. 107 dynes | |
| 20. |
The moment of a force is |
| A. | Equivalent to the algebraic sum of the moments acting on a body |
| B. | Equivalent to the sum of horizontal as well as vertical components of the moments on a body |
| C. | Equivalent to the sum of the moments acting on a body |
| D. | Equivalent to the sum of horizontal components of the moments on a body |
| E. | Equivalent to the vertical sum of the moments acting on a body |
| Answer» B. Equivalent to the sum of horizontal as well as vertical components of the moments on a body | |
| 21. |
A gun fires shell with a muzzle velocity of 600 m/sec. The angle of inclination of the gun so that the shell hits a target at a distance of 32 km at level 100 m higher than the gun would be approximately? |
| A. | 60? |
| B. | 45? |
| C. | 30? |
| D. | 15? |
| E. | Either of (A) and (C) |
| Answer» F. | |
| 22. |
If a gymnast sitting on a rotating stool, with his arms outstretched suddenly lowers his arm |
| A. | the angular velocity will remain constant |
| B. | the angular momentum will increase |
| C. | the angular velocity will decrease |
| D. | his moment of inertia will decrease |
| E. | 107 dynes |
| Answer» E. 107 dynes | |
| 23. |
The tension in the wire rope supporting a lift moving with a uniform velocity |
| A. | Is more when the lift is moving upwards |
| B. | Is more when the lift is moving downwards |
| C. | Is less when the lift is moving down-wards |
| D. | Is less when the lift is moving upwards |
| E. | Remains constant irrespective of the lift movement |
| Answer» F. | |
| 24. |
A crate weighing 40 kg rests on a cart moving with an acceleration W. The coefficient of friction between the cart and the crate is |
| A. | 2.45 m/sec2 |
| B. | 4.00 m/sec2 |
| C. | 0.25 m/sec2 |
| D. | 4.16 m/sec2 |
| E. | 1.25 m/sec2 |
| Answer» B. 4.00 m/sec2 | |
| 25. |
A roller coaster reaches a velocity of 20 m/s at a location where the radius of curvature is 40 m. Calculate the acceleration in m/s2? |
| A. | 10 |
| B. | 9 |
| C. | 11 |
| D. | 8 |
| E. | 107 dynes |
| Answer» B. 9 | |
| 26. |
The coefficient of static friction will have the highest value in case of |
| A. | Mild steel and mild steel |
| B. | Mild steel and copper |
| C. | Cast iron and steel |
| D. | Rope and wood |
| E. | Any of the above loctions |
| Answer» E. Any of the above loctions | |
| 27. |
A wheel accelerates from rest with an acceleration of 6 rad/sec2. How many revolutions are experienced in 4 seconds? |
| A. | 12.36 |
| B. | 25.6 |
| C. | 9.82 |
| D. | 107 dynes |
| E. | 7.64 |
| Answer» F. | |
| 28. |
Work done by a body of mass 100 kg moving along a circular path of radius 2 m with a uniform velocity of 10 m/sec is |
| A. | 5000 J |
| B. | 2500 J |
| C. | 509.68 J |
| D. | None of the above |
| E. | Tapered bearing |
| Answer» E. Tapered bearing | |
| 29. |
The angular velocity of seconds hand of a watch is |
| A. | 0.01745 sec-1 |
| B. | 0.00001745 sec-1 |
| C. | 0.0001745 sec-1 |
| D. | 0.001745 sec-1 |
| E. | 0.1047 sec-1 |
| Answer» E. 0.1047 sec-1 | |
| 30. |
A satellite launch station should be |
| A. | 107 dynes |
| B. | near the equatorial region |
| C. | all the locations are equally good |
| D. | one the polar axis |
| E. | near the polar region |
| Answer» C. all the locations are equally good | |
| 31. |
The direction of projection for the range of a projectile to be maximum on an inclined plane having angle of inclination 30? to the horizontal, whould be |
| A. | 45? with horizontal |
| B. | 30? with vertical |
| C. | 30? with horizontal |
| D. | 60? with inclined plane |
| E. | 45? with inclined plane |
| Answer» C. 30? with horizontal | |
| 32. |
A jet engine works on the principle of |
| A. | Conservation of energy |
| B. | Conservation of mass and momentum |
| C. | Conservation of linear mementum |
| D. | Conservation of energy and momentum |
| E. | Conservation of mass |
| Answer» D. Conservation of energy and momentum | |
| 33. |
For a perfect frame having 13 members the number of joints must be |
| A. | 8 |
| B. | 6 |
| C. | 7 |
| D. | 107 dynes |
| E. | 9 |
| Answer» B. 6 | |
| 34. |
For perfectly elastic bodies, the value of the coefficient of restitution is |
| A. | 1 |
| B. | 0.372 |
| C. | 0.5 |
| D. | Zero |
| E. | Any value between 0 and 1 |
| Answer» B. 0.372 | |
| 35. |
A flywheel 200 cm in diameter is rotating at 100 rpm. A point on the rim of the flywheel will not have |
| A. | angular velocity |
| B. | centripental acceleration |
| C. | tangential acceleration |
| D. | all of the above |
| E. | 107 dynes |
| Answer» D. all of the above | |
| 36. |
A imaginary planet has half the mass and half the radius of the earth. The acceleration of gravity at its surface would be |
| A. | 9.8 m/s2 |
| B. | 107 dynes |
| C. | 4.9 m/s2 |
| D. | 19.6 m/s2 |
| E. | 2.45 m/s2 |
| Answer» E. 2.45 m/s2 | |
| 37. |
The tension T1 will be |
| A. | 5 N |
| B. | 20 N |
| C. | 60 N |
| D. | 10 N |
| E. | 107 dynes |
| Answer» E. 107 dynes | |
| 38. |
The area under stress-strain curve represents |
| A. | Hardness of material |
| B. | Breaking strength of the material |
| C. | Energy required to cause failure |
| D. | Toughness of material |
| E. | Malleabbility of material |
| Answer» D. Toughness of material | |
| 39. |
Impulse can be obtained from |
| A. | force-time diagram |
| B. | velocity-time diagram |
| C. | 107 dynes |
| D. | force displacement diagram |
| E. | velocity-displacement diagram |
| Answer» B. velocity-time diagram | |
| 40. |
The work done in sliding a block of weight of 50 kg up a plane inclined at an angle of 30? to the horizontal so that the block is lifted through 1 m ( |
| A. | More than 50 kgm |
| B. | 50 kgm |
| C. | Less than 5 kgm |
| D. | 15 kgm only |
| E. | None of the above |
| Answer» B. 50 kgm | |
| 41. |
A block of weight 20 kg slides with an initial velocity of 2 m sec down an inclined plane on to a spring of stiffness 10 kg/cm. If the co--efficient of friction is 0.2, angle ? = 30 the ratio of maximum compession of spring, neglecting friction to that while considering friction would be |
| A. | More than one |
| B. | One |
| C. | Less than one |
| D. | Depends on the stiffness of spring |
| E. | None of the above |
| Answer» B. One | |
| 42. |
If for power transmission a gear train consisting of 8 gears is used, then |
| A. | the motion of driver and follower will be in the same direction |
| B. | the motion of driver and follower will be in the opposite directions |
| C. | either of (A) or (B) above |
| D. | None of the above |
| E. | 107 dynes |
| Answer» C. either of (A) or (B) above | |
| 43. |
A body weighing one tonne falls through 8 cm on to a spring of stiffness 500 kg/cm the spring will be compressed through |
| A. | 8 cm |
| B. | 6 cm |
| C. | 4 cm |
| D. | 10 cm |
| E. | 12 cm |
| Answer» B. 6 cm | |
| 44. |
The coefficient of friction is |
| A. | The tangent of the angle between the normal reaction and direction of limiting friction |
| B. | The tangent of the angle between the normal reaction and the resultant of the normal reaction and the limiting friction |
| C. | The tangent of the angle of the net resultant force with the direction of motion |
| D. | The tangent of the angle between the horizontal plane and the resultant force |
| E. | The angle between the normal reaction and the resultant of normal reaction and the limiting friction |
| Answer» B. The tangent of the angle between the normal reaction and the resultant of the normal reaction and the limiting friction | |
| 45. |
The curve of a catenary by nature is |
| A. | hyperbolic |
| B. | ellipse |
| C. | 107 dynes |
| D. | circular |
| E. | parabolic |
| Answer» F. | |
| 46. |
A truss element |
| A. | 107 dynes |
| B. | resists lateral forces |
| C. | is a two-force body |
| D. | is a three force body |
| E. | resist forces in compression only |
| Answer» D. is a three force body | |
| 47. |
When a body moves round a fixed axis it will have |
| A. | A motion of rotation and translation |
| B. | A circular motion |
| C. | A rotary motion |
| D. | A translatory motion |
| E. | A swinging motion |
| Answer» C. A rotary motion | |
| 48. |
For perfectly elastic bodies the value of the coefficient of restitution is |
| A. | 0.707 |
| B. | 0.5 |
| C. | 1 |
| D. | 0.25 |
| E. | Zero |
| Answer» B. 0.5 | |
| 49. |
A column has its equivalent length equal to its length in case of |
| A. | one end fixed, other free |
| B. | both ends hinged |
| C. | one end hinged, other free |
| D. | 107 dynes |
| E. | both end fixed |
| Answer» C. one end hinged, other free | |
| 50. |
A flywheel starting from rest and accelerating uniformly performs 25 revolutions in 5 sec. Its angular velocity in rpm after 10 seconds would be |
| A. | 50 rpm |
| B. | 20 rpm |
| C. | 25 rpm |
| D. | 60 rpm |
| E. | 45 rpm |
| Answer» C. 25 rpm | |