MCQOPTIONS
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MCQOPTIONS
This section includes 143 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering Questions knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following statements is true for flat belts? |
| A. | They are used for short distances between the pulleys |
| B. | They have high efficiency |
| C. | They are used in lathe machines |
| D. | All of the above |
| Answer» D. All of the above | |
| 2. |
Work done by an engine in 6 sec is 1000 joules. What is the power generated by the engine in watt? |
| A. | 1600 watt |
| B. | 600 watt |
| C. | 166 watt |
| D. | 600 watt |
| Answer» D. 600 watt | |
| 3. |
Which of the following statements is false about frame/truss? |
| A. | Bent member is never used in a truss |
| B. | Internal hinges are used to connect members in a truss |
| C. | All members in the truss are two force members |
| D. | Multiforce members can be used in a frame |
| Answer» C. All members in the truss are two force members | |
| 4. |
Which of the following statements is false about forces/couple? |
| A. | Moment of couple is free vector |
| B. | Resultant and equilibrant are equal in magnitude and direction |
| C. | Resultant of a couple is always zero |
| D. | Parallelogram law is to be proved experimentally |
| Answer» C. Resultant of a couple is always zero | |
| 5. |
Which of the following laws derive impulse moment principle? |
| A. | Newton's 3rd law |
| B. | Newton's 2nd law |
| C. | Newton's 1st law |
| D. | All of the above |
| Answer» C. Newton's 1st law | |
| 6. |
Which of the following laminas do not have centroid at its geometrical centre? |
| A. | Circle |
| B. | Equilateral triangle |
| C. | Right angled triangle |
| D. | None of the above |
| Answer» D. None of the above | |
| 7. |
Which of the following is the locus of a point that moves in such a manner that its distance from a fixed point is equal to its distance from a fixed line multiplied by a constant greater than one___________________? |
| A. | ellipse |
| B. | hyperbola |
| C. | parabola |
| D. | circle |
| E. | none of the above |
| Answer» C. parabola | |
| 8. |
Which of the following is represented by the area under force-displacement diagram? |
| A. | Impulse |
| B. | Momentum |
| C. | Power |
| D. | Work done |
| Answer» E. | |
| 9. |
Which of the following is not the unit of energy_________________? |
| A. | kg m |
| B. | kcal |
| C. | wattr |
| D. | watt hours |
| E. | kg m x (m/sec)2 |
| Answer» D. watt hours | |
| 10. |
Which of the following is not a vector quantity __________________? |
| A. | weight |
| B. | velocity |
| C. | acceleration |
| D. | force |
| E. | moment |
| Answer» B. velocity | |
| 11. |
Which of the following is a vector quantity___________________? |
| A. | energy |
| B. | mass |
| C. | momentum |
| D. | angle |
| E. | speed |
| Answer» D. angle | |
| 12. |
Which of the following force(s) is a type of conservative force? |
| A. | Frictional force |
| B. | Gravity force |
| C. | Both a. and b. |
| D. | None of the above |
| Answer» C. Both a. and b. | |
| 13. |
Which of the following factors are related by work energy principle? |
| A. | force, displacement and time |
| B. | force, velocity, time and mass |
| C. | force, velocity, displacement |
| D. | displacement, time and mass |
| Answer» D. displacement, time and mass | |
| 14. |
Which of the following conditions is satisfied for cantilever truss? |
| A. | n > 2j – R |
| B. | n < 2j – R |
| C. | n = 2j – R |
| D. | n ≠ 2j – R |
| Answer» D. n ≠ 2j – R | |
| 15. |
Which of the following conditions do not change the effect of couple? |
| A. | Shifting of couple to a new position in its plane |
| B. | Shifting of couple to a parallel plane |
| C. | Rotation of couple in its plane |
| D. | All of the above |
| Answer» E. | |
| 16. |
Which method is used to determine centroid of a composite figure? |
| A. | Analytical method |
| B. | Graphical method |
| C. | Both a. and b. |
| D. | None of the above |
| Answer» D. None of the above | |
| 17. |
Which belt is used to transmit power at high speeds? |
| A. | Flat belt |
| B. | V belt |
| C. | Both a. and b. |
| D. | None of the above |
| Answer» C. Both a. and b. | |
| 18. |
Which axial force is determined while analyzing a truss? |
| A. | compressive force |
| B. | tensile force |
| C. | both a. and b. |
| D. | none of the above |
| Answer» D. none of the above | |
| 19. |
When trying to turn a key into a lock, following is applied _____________________? |
| A. | coplanar force |
| B. | non-coplanar forces |
| C. | lever |
| D. | moment |
| E. | couple |
| Answer» F. | |
| 20. |
When motion is _______, the normal component of acceleration is zero. |
| A. | curvilinear |
| B. | rotational |
| C. | rectilinear |
| D. | translation |
| Answer» D. translation | |
| 21. |
When acceleration is _______, velocity of a particle is constant. |
| A. | constant but non zero |
| B. | maximum |
| C. | zero |
| D. | none of the above |
| Answer» D. none of the above | |
| 22. |
What is the S.I unit of work done? |
| A. | Joule |
| B. | Newton meter |
| C. | Both a. and b. |
| D. | None of the above |
| Answer» D. None of the above | |
| 23. |
What is the minimum velocity attained by a ball thrown with velocity of 20 m/s at an angle of 40° with the horizontal? |
| A. | 15.32 m/s |
| B. | 12.85 m/s |
| C. | 16.78 m/s |
| D. | None of the above |
| Answer» B. 12.85 m/s | |
| 24. |
What is the maximum distance traveled by a block moving upwards on an inclined plane of 30° with velocity of 20 m/s, if coefficient of friction is 0.23 between the block and inclined plane? |
| A. | 29.19 m |
| B. | 22.56 m |
| C. | 17.32 m |
| D. | 17.00 m |
| Answer» B. 22.56 m | |
| 25. |
What is the length of a train which crosses a bridge of 150 m in 20 sec with a speed of 40 km/h? |
| A. | 222 m |
| B. | 150 m |
| C. | 72.2 m |
| D. | 70.5 m |
| Answer» D. 70.5 m | |
| 26. |
What is the kinetic energy at the highest point, if at an angle of 30° with the horizontal a ball is projected with a kinetic energy E? |
| A. | E / 2 |
| B. | E / √2 |
| C. | 5E / 4 |
| D. | 3E / 4 |
| Answer» E. | |
| 27. |
What is the distance traveled by an electron in first 4 seconds from its initial position, if velocity time relation is given as v = 3t? |
| A. | 12 m |
| B. | 15 m |
| C. | 20 m |
| D. | 24 m |
| Answer» E. | |
| 28. |
What is the coefficient of restitution (e) for elastic impact? |
| A. | e = 0 |
| B. | e = 1 |
| C. | e < 0 |
| D. | e > 1 |
| Answer» C. e < 0 | |
| 29. |
What is the centroidal distance of an equilateral triangle of side 2 m? |
| A. | 0.866 m |
| B. | 0.769 m |
| C. | 1.000 m |
| D. | 0.577 m |
| Answer» E. | |
| 30. |
What is the C.G of an isosceles triangle of base 20 cm and side 40? |
| A. | 12.90 cm |
| B. | 13.28 cm |
| C. | 19.36 cm |
| D. | 38.72 cm |
| Answer» B. 13.28 cm | |
| 31. |
What is the average resistance required to stop a truck of mass 600 kg in a distance of 30 m, if initial speed is 30 m/sec? |
| A. | 8000 N |
| B. | 9 kN |
| C. | 9.5 kN |
| D. | 9 N |
| Answer» C. 9.5 kN | |
| 32. |
What is the angle made by side of a square lamina, if it is freely suspended from a corner with the horizontal? |
| A. | 0° |
| B. | 45° |
| C. | 90° |
| D. | 180° |
| Answer» C. 90° | |
| 33. |
What is the angle of projection for a bullet fired over a horizontal plane, when horizontal range is equal to 4 times the maximum height? |
| A. | 30° |
| B. | 45° |
| C. | 76° |
| D. | 90° |
| Answer» C. 76° | |
| 34. |
What are the limitations of string law? |
| A. | Direction of motion cannot be specified |
| B. | Valid only when more than three particles are connected by a single string |
| C. | Both a. and b. |
| D. | None of the above |
| Answer» B. Valid only when more than three particles are connected by a single string | |
| 35. |
Varignon's theorem is used to find ________ |
| A. | direction of resultant force |
| B. | location of resultant force |
| C. | magnitude of resultant force |
| D. | nature of resultant force |
| Answer» C. magnitude of resultant force | |
| 36. |
Uniformly distributed load of 5 kN acts on a simply supported beam of length 10 m. What are the reactions at end points of the beam? |
| A. | 12.5 kN |
| B. | 25 kN |
| C. | 50 kN |
| D. | None of the above |
| Answer» C. 50 kN | |
| 37. |
Two non-collinear parallel equal forces acting in opposite direction__________________? |
| A. | balance each other |
| B. | constitute a moment |
| C. | constitute a couple |
| D. | constitute a moment of couple |
| E. | constitute a resultant couple |
| Answer» D. constitute a moment of couple | |
| 38. |
Two coplanar couples having equal and opposite moments_________________? |
| A. | balance each other |
| B. | produce a couple and an unbalanced force |
| C. | are equivalent |
| D. | produce a moment of couple |
| E. | can not balance each other |
| Answer» F. | |
| 39. |
Two cars X and Y move on adjacent roads in opposite directions. If velocity of car X and Y is 80 km/hr and 60 km/hr respectively, then what will be the relative velocity of car X w.r.t. Y? |
| A. | 70 km/hr |
| B. | 100 km/hr |
| C. | 140 km/hr |
| D. | Insufficient data |
| Answer» D. Insufficient data | |
| 40. |
The weight of a body is due to ___________________? |
| A. | centripetal force of earth |
| B. | gravitational pull exerted by the earth |
| C. | forces experienced by body in atmosphere |
| D. | force of attraction experienced by particles |
| E. | gravitational force of attraction towards the center of the earth |
| Answer» F. | |
| 41. |
The units of moment of inertia of mass are ________________? |
| A. | kg m2 |
| B. | m4 |
| C. | kg/m2 |
| D. | kg/m |
| E. | m2/kg |
| Answer» B. m4 | |
| 42. |
The units of moment of inertia of an area are__________________? |
| A. | kg m2 |
| B. | m4 |
| C. | kg/m2 |
| D. | m3 |
| E. | kg/m4 |
| Answer» C. kg/m2 | |
| 43. |
The unit of work or energy in S.I. units is_______________? |
| A. | newton |
| B. | pascal |
| C. | kilogram meter |
| D. | watt |
| E. | joule |
| Answer» F. | |
| 44. |
The unit of force in S.I. units is________________? |
| A. | kilogram |
| B. | newton |
| C. | watt |
| D. | dyne |
| E. | joule |
| Answer» C. watt | |
| 45. |
The total momentum of a system __________, if no external impressed force acts on it. |
| A. | increases |
| B. | decreases |
| C. | remains constant |
| D. | none of the above |
| Answer» D. none of the above | |
| 46. |
The resultant of the following three couples 20 kg force, 0.5 m arm, $ ve sense 30 kg force, 1 m arm, – ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be__________________? |
| A. | 20 kg, – ve sense |
| B. | 20 kg, + ve sense |
| C. | 10 kg, + ve sense |
| D. | 10 kg, – ve sense |
| E. | 45 kg, + ve sense |
| Answer» B. 20 kg, + ve sense | |
| 47. |
The ratio of limiting friction and normal reaction is known as _____________________? |
| A. | coefficient of friction |
| B. | angle of friction |
| C. | angle of repose |
| D. | sliding friction |
| E. | friction resistance |
| Answer» B. angle of friction | |
| 48. |
The rate of change of __________ with respect to time is called as jerk. |
| A. | acceleration |
| B. | density |
| C. | displacement |
| D. | volume |
| Answer» B. density | |
| 49. |
The radius of curvature of trajectory for a profile is minimum, if __________ |
| A. | velocity is minimum |
| B. | acceleration is maximum |
| C. | both a. and b. |
| D. | none of the above |
| Answer» D. none of the above | |
| 50. |
The radial component of velocity for a particle moving in circular path is ______ |
| A. | constant |
| B. | radius itself |
| C. | variable |
| D. | zero |
| Answer» E. | |