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. |
The length of Seconds Pendulum is |
| A. | 992 mm |
| B. | 999 mm |
| C. | 994 mm |
| D. | 995 mm |
| E. | 1000 mm |
| Answer» D. 995 mm | |
| 2. |
A ball is dropped from a height of 2.25 m on a smooth floor and it rises to a height of 1 m after the first bounce. The coefficient of restitutions between the ball and the floor is |
| A. | 107 dynes |
| B. | 0.33 |
| C. | 0.44 |
| D. | 0.57 |
| E. | 0.67 |
| Answer» F. | |
| 3. |
In a torsion pendulum |
| A. | The body attached to the lower end of wire or rod must be elastic |
| B. | The clamp must be elastic |
| C. | The clamp must be elastic |
| D. | (A) and (B) above |
| E. | (A), (B) and (C) together |
| Answer» D. (A) and (B) above | |
| 4. |
A stone of wight 100 kg is thrown vertically upwards by a man of height y = 1.8 m with an initial velocity of 20 m/sec. The maximum height to which it will rise would be |
| A. | 22.2 m |
| B. | 26 m |
| C. | 15.1 m |
| D. | 20.2 m |
| E. | 10 m |
| Answer» B. 26 m | |
| 5. |
A stone is dropped into a deep shaft without any initial velocity. The sound of the stone hitting the bottom is heard after 4 seconds. If the velocity of sound is 330 m/sec the depth of the shaft will be |
| A. | 33.1 m |
| B. | 660 m |
| C. | 165 m |
| D. | 66.2 m |
| E. | 330 m |
| Answer» E. 330 m | |
| 6. |
What is the total acceleration of a point on the rim of a flywheel 4 mts in diameter 0.6 see after it has started from rest if it accelarates uniformly from rest to 2000 rpm in 20 secs. |
| A. | 68.9 mts/sec2 |
| B. | 102.6 mts/sec2 |
| C. | 78.94 mts/sec2 |
| D. | 107 dynes |
| E. | 33.2 mts/sec2 |
| Answer» D. 107 dynes | |
| 7. |
A stone is thrown up from the foot of tower 50 m high with a velocity of 25 m/sec and at the same time another stone is dropped from the top of tower, the two stones will cross each other after |
| A. | 3 sec |
| B. | 5 sec |
| C. | 4 sec |
| D. | 4.5 sec |
| E. | 2 sec |
| Answer» F. | |
| 8. |
A cage weighing 200 kg is lowered down a mine shaft with uniform acceleration. In the first 5 sec the cage reaches a depth of 20 m. The tension in the cord lowering the cage would be |
| A. | 836 kg |
| B. | 167.2 kg |
| C. | 100 kg |
| D. | 41.8 kg |
| E. | 200 kg |
| Answer» C. 100 kg | |
| 9. |
The force which produces an acceleration of 1 m/sec2 in a mass of 1 kg is called |
| A. | 100 ergs |
| B. | one Newton |
| C. | one watt |
| D. | One erg |
| E. | one joule |
| Answer» C. one watt | |
| 10. |
A force of 100 Newtons acts for 0.5 seconds on a body of mass 20 kg which is initially at rest. The velocity attained by the body is |
| A. | 20 m/s |
| B. | 5 m/s |
| C. | 2.5 m/s |
| D. | 0.5 m/s |
| E. | 107 dynes |
| Answer» D. 0.5 m/s | |
| 11. |
A cube of wood supporting 200 gm mass just floats in water. When the mass is removed, the cube rises by 2 cm the side of the cube will be |
| A. | 5 cm |
| B. | 10 cm |
| C. | 12.5 cm |
| D. | 20 cm |
| E. | 15 cm |
| Answer» B. 10 cm | |
| 12. |
A rocket is fired vertically from the ground with a resultant vertical acceleration of 10 m/sec the fuel is finished in one minute and it continues to move up. The maximum height reached will be |
| A. | 2 km |
| B. | 20 km |
| C. | 36 km |
| D. | 10 km |
| E. | 80 km |
| Answer» B. 20 km | |
| 13. |
A particle is of wieght 8 kg. When it is allowed to fall under the force of gravity its momentum at the time t = 2 sec would be |
| A. | 8 kg sec |
| B. | 32 kg sec |
| C. | 2 kg sec |
| D. | 16 kg sec |
| E. | 48 kg sec |
| Answer» E. 48 kg sec | |
| 14. |
A particle of mass M moves towards right with a velocity 2 V along the x-axis and another of mass 2 M with a velocity V towards left (- x axis). After the collision (they stick together on colliging) they will |
| A. | come to rest |
| B. | 107 dynes |
| C. | move towards right |
| D. | may move in any direction |
| E. | move towards left |
| Answer» D. may move in any direction | |
| 15. |
A boy and his dad put a rope around a tree and stand side by side. What force by the boy can resist a force of 800 N by the dad? |
| A. | 231 |
| B. | 246 |
| C. | 192 |
| D. | 107 dynes |
| E. | 166 |
| Answer» F. | |
| 16. |
A grinding wheel is rotating at 3000 rpm. When the switch is turned off the wheel stops in 10 seconds. The uniform deceleration of the wheel was |
| A. | 1 rad/s2 |
| B. | 31.4 rad/s2 |
| C. | 4 rad/s2 |
| D. | 62.8 rad/s2 |
| E. | 10.4 rad/s2 |
| Answer» C. 4 rad/s2 | |
| 17. |
The torque of 50 Nm is applied on the wheel operating a valve. If the wheel is rotated through two revolutions, work done in Newton-metres is given by |
| A. | 628 |
| B. | 107 dynes |
| C. | 314 |
| D. | 25 |
| E. | 100 |
| Answer» B. 107 dynes | |
| 18. |
In a single threaded worm and worm wheel the number of teeth on the worm wheel is 60. The diameter of the effort wheel is 12 cm and that of load drum is 8 cm. The velocity ratio will be |
| A. | 90 |
| B. | 120 |
| C. | 60 |
| D. | 45 |
| E. | 107 dynes |
| Answer» B. 120 | |
| 19. |
A ball of mass 1 kg moving with a velocity of 2 m/sec collides directly with a stationary ball of mass 2 kg. If the first ball comes to rest after the impact the velocity of second ball after impact will be |
| A. | 1.5 m/sec |
| B. | 0.5 m/sec |
| C. | Zero |
| D. | 2 m/sec |
| E. | 1.0 m/sec |
| Answer» F. | |
| 20. |
A grinding wheel rotates at 3000 rpm. When power supply is cut off the wheel stops in 5 sec. The number of revolutions made by the wheel before coming to rest would be |
| A. | 500 |
| B. | 107 dynes |
| C. | 250 |
| D. | 3000 |
| E. | 1000 |
| Answer» D. 3000 | |
| 21. |
A grinding wheel rotates at 3000 rpm. When power supply is cut-off the wheel stops in 10 seconds. The number of revolutions made by the wheel before coming to rest would be |
| A. | 1500 |
| B. | 3000 |
| C. | 1000 |
| D. | 250 |
| E. | 500 |
| Answer» E. 500 | |
| 22. |
The power of a locomotive is 315 kW and the total weight of the train is 2000 kN. If the track resistance is qN per kN, the maximum speed that the locomotive can attain on level track will be |
| A. | 103 kmph |
| B. | 83 kmph |
| C. | 107 dynes |
| D. | 43 kmph |
| E. | 63 kmph |
| Answer» F. | |
| 23. |
In a single threaded worm and worm wheel the number of teeth on the worm wheel is 80. The diameter of the effort wheel is 12 cm and that of load drum is 8 cm. The velocity ratio will be |
| A. | 60 |
| B. | 45 |
| C. | 120 |
| D. | 107 dynes |
| E. | 90 |
| Answer» D. 107 dynes | |
| 24. |
The power of a locomotive is 315 kW and the total weight of the train is 2000 kN. If the track resistance is 15 N per kN, the maximum speed that the locomotive can attain on level track will be |
| A. | 43 kmph |
| B. | 83 kmph |
| C. | 103 kmph |
| D. | 107 dynes |
| E. | 38 kmph |
| Answer» F. | |
| 25. |
The satellite moves in a circle around the earth. The radius of this circle is equal to one-half the radius of the moons orbit. The satellite will complete one revolution in |
| A. | 1 lunar month |
| B. | 2-3/4 lunar month |
| C. | 2-2/3 lunar month |
| D. | None of the above |
| Answer» F. | |
| 26. |
If two bodies one light and one heavy have equal kinetic energies, which one has a greater momentum? |
| A. | Momentum depends on velocities |
| B. | Heavy body |
| C. | Both have equal momentum |
| D. | Nothing can be concluded on the basis of information provided |
| E. | Light body |
| Answer» C. Both have equal momentum | |
| 27. |
The piston of a steam engine moves in S.H.M. The crank rotates at 180 r.p.m. and the stroke length is 2 metres. The linear velocity of the piston when it is at a distance of 1 metre from the centre is |
| A. | 8.88 m/sec |
| B. | 16.32 m/sec |
| C. | 5.88 m/sec |
| D. | 8.16 m/sec |
| E. | Zero |
| Answer» F. | |
| 28. |
A satellite orbits the earth 200 km above the surface. What speed, in m/s, is necessary for a circular orbit? The radius of the earth is 6400 km and g = 9.2 m/s2 |
| A. | 7200 |
| B. | 6600 |
| C. | 7800 |
| D. | 6000 |
| E. | 107 dynes |
| Answer» D. 6000 | |
| 29. |
A mass of 5 kg moves on a smooth horizontal plane with a speed of 8 m/s attached to a fixed point on the plane by a string of length 4m. Tension in the string is |
| A. | 785 |
| B. | 80N |
| C. | 392.4N |
| D. | None of the above |
| E. | Tapered bearing |
| Answer» C. 392.4N | |
| 30. |
If air resistance is neglected, at the mid-point of its swing, the acceleration of the bob of a simple pendulum along its path is always |
| A. | Increasing |
| B. | Zero |
| C. | A cycloid |
| D. | Decreasing |
| E. | A minimum but not equal to zero |
| Answer» E. A minimum but not equal to zero | |
| 31. |
When horizontal range of a projectile equal to the distance through which projectile will rise, then the angle of projection of the particle will be equal to |
| A. | 36? |
| B. | 24? |
| C. | 48? |
| D. | 107 dynes |
| E. | 76? |
| Answer» F. | |
| 32. |
The locus of instantaneous centre of a moving rigid body |
| A. | Epicycloid |
| B. | Straight line |
| C. | Involute |
| D. | Cycloid |
| E. | Centrode |
| Answer» F. | |
| 33. |
The angle of projection when the range is equal to the distance through which the particle would have fallen in order to acquire a velocity equal to the velocity of projection will be |
| A. | 30? |
| B. | 45? |
| C. | 15? |
| D. | 90? |
| E. | 22 |
| Answer» D. 90? | |
| 34. |
A flywheel weighs 400 kg and has a radius of gyration of 30 cm about its axis of rotation. It is mounted on a shaft subjected to a moment of 40 kgm. If the flywheel starts from restits speed after 3 seconds wil be |
| A. | 10.9 rad/sec |
| B. | 19.0 rad/sec |
| C. | 51.2 rad/sec |
| D. | 3.33 rad/sec |
| E. | 16.35 rad/sec |
| Answer» E. 16.35 rad/sec | |
| 35. |
The moving parts of a machine which weigh 1 tonne perform vertical simple harmonic motion with an amplitude of 2.5 cm and a period of 0.5 sec. The base of the machine weighs 3 tonnes and rests on the ground. Maximum reactions on the ground would be |
| A. | 3.6 tonnes |
| B. | 2.4 tonnes |
| C. | 4.0 tonnes |
| D. | 4.8 tonnes |
| E. | 4.4 tonnes |
| Answer» F. | |
| 36. |
The weight of a 72 kg man on earth's surface is |
| A. | 100.3 N |
| B. | 72 N |
| C. | 107 dynes |
| D. | 706.3 N |
| E. | 760 N |
| Answer» E. 760 N | |
| 37. |
The dimensions of gravitational constant G |
| A. | MLT-2 |
| B. | M-1L3T-2 |
| C. | Ellipsc |
| D. | ML2T-1 |
| E. | MLT-1 |
| Answer» C. Ellipsc | |
| 38. |
The earth's gravitational force field is said to be conservative force field because |
| A. | The work acted by the earth's gravitational field on a particle is independent on the path traced out by the particle |
| B. | The work acted by the erth's gravitational field will cause same path for all particles irrespective of their mass |
| C. | The direction of gravitational force is fixed |
| D. | The gravitational field has only single directional component always acting normal to a body |
| E. | The value of gravitational force rise is fixed |
| Answer» B. The work acted by the erth's gravitational field will cause same path for all particles irrespective of their mass | |
| 39. |
A man weighing 60 kg jumps on a vehicle of weight 240 kg moving with a velocity of 36 km/hours. The velocity of the vehicle after the man has jumped would be |
| A. | Less than 3.6 km/hour |
| B. | 3.6 km/hour |
| C. | More than 3.6 km/hour |
| D. | 4.5 km/hour |
| E. | None of the above |
| Answer» B. 3.6 km/hour | |
| 40. |
The statement that the sum of the kinetic and potential energies of a particle in the earth's gravitational field is constant is known as |
| A. | Principle of conservation of mechanical energy |
| B. | Law of gravitation |
| C. | Newton's law |
| D. | Principle of conservation of momentum |
| E. | Law of nature |
| Answer» B. Law of gravitation | |
| 41. |
A locomotive of weight 100 tonnes is attached to train of wagons weighing 1000 tonnes. The locomotive pulls the wagons with a constant velocity of 36 km/hour. When the coupling between the train and wagons breaks, the wagons roll on 95 m in 10 sec. The distance between the locomotive and the wagons at this instant assuming that the forces acting on the train are unaltered would be |
| A. | 0.36 m |
| B. | 0.44 m |
| C. | 0.77 m. |
| D. | 0.5 m |
| E. | 0.66 m |
| Answer» E. 0.66 m | |
| 42. |
A man lifts a stone weighting 300 g from the ground to a height of 2m and throws it horizontally with a velocity of 6 m/sec. The work done by the man is |
| A. | 7.686 J |
| B. | 11.286 J |
| C. | 5.886 J |
| D. | 8.343 J |
| E. | Tapered bearing |
| Answer» C. 5.886 J | |
| 43. |
When two forces acting at a point are such that if the direction of one is reversed, the direction of the resultant is turned through a right angle, the forces must be |
| A. | inclined at more than 90? |
| B. | inclined at less than 90? |
| C. | equal in magnitude |
| D. | acting at 180? |
| E. | 107 dynes |
| Answer» D. acting at 180? | |
| 44. |
The gravitational field intensity is maximum at the |
| A. | 107 dynes |
| B. | at a height above the surface |
| C. | pole |
| D. | equator |
| E. | centre of the earth |
| Answer» F. | |
| 45. |
The statement ---- if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two ---- is known as |
| A. | Law of polygon of forces |
| B. | D'Alembert's principle |
| C. | Newtons law of forces |
| D. | Lami's theorem |
| E. | Law of triangle of forces |
| Answer» E. Law of triangle of forces | |
| 46. |
A couple consists of a force P acting at a point A whose coordinates are (-1,2,4) m and force - F acting at a point whose coordinates are (2,3, -2)m. If F = 3i + 2j - 4k in kg units the moment of the couple in kg - m units would be |
| A. | 8i - 6j - 3k |
| B. | 12i - 3j + k |
| C. | 16i - 12j - 6k |
| D. | 4i - 3j + k |
| E. | 8i + 5j + 3k |
| Answer» B. 12i - 3j + k | |
| 47. |
When all the forces acting on a body lie in one plane and their lines of action meet at one point, the forces |
| A. | constitute a moment |
| B. | constitute a couple |
| C. | are known as coplaner-concurrent forces. |
| D. | are known as non-coplaner forces |
| E. | 107 dynes |
| Answer» D. are known as non-coplaner forces | |
| 48. |
A particle moves along a rough plane inclined at 30? to the horizontal. The co-efficient of friction between the particle and the plane is 0.1. Its initial velocity is 15 m/sec. The ratio of the velocity of the particle when it move down the plane to that when it move up the plane would be in the regions |
| A. | 8 ? 10 |
| B. | 5 ? 7 |
| C. | 2 ? 3 |
| D. | 4 ? 6 |
| E. | 10 ? 13 |
| Answer» C. 2 ? 3 | |
| 49. |
The statement the resultant of the external forces applied to a body (rigid or non-rigid) composed of a system of particles is equivalent to the vector summation of the effective forces acting on all particles-is known as |
| A. | Corollary to Newton's laws of motion |
| B. | Principle of dynamics |
| C. | D' Alembert's principle |
| D. | Nowton's law |
| E. | Mohr's principle |
| Answer» D. Nowton's law | |
| 50. |
The statement --- if forces acting on a point can be represented in magnitude and direction by the sides of a polygon taken in order then their resultant will be represented in magnitude and direction by the closing side of the polygon taken in opposite order ---- is known as |
| A. | Law of triangle of forces |
| B. | Newton's law of forces |
| C. | Law of polygon of forces |
| D. | D'Alembert's rule |
| E. | Lami's theorem |
| Answer» D. D'Alembert's rule | |