MCQOPTIONS
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MCQOPTIONS
This section includes 25 Mcqs, each offering curated multiple-choice questions to sharpen your Theory Machines knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A single plate clutch, where n = 2, is required to transmit 30 kW at 3000 r.p.m. Determine the outer and inner radii if the coefficient of friction is 0.3, the ratio of radii is 1.5. pmax = 0.1 N/mm2. |
| A. | 0.111 mm, 0.074 mm |
| B. | 111 mm, 74 mm |
| C. | 74 mm, 111 mm |
| D. | 0.074 mm, 0.111 mm |
| Answer» C. 74 mm, 111 mm | |
| 2. |
A single plate clutch, having n = 2, has outer and inner radii 200 mm and 175 mm respectively. The maximum intensity of pressure at any point is 0.05 N/mm2. If the µ is 0.4 and the power generated by the clutch is equal to 32.384 kW, determine the speed of the clutch. |
| A. | 209.44 r.p.m. |
| B. | 2000 r.p.m. |
| C. | 157.08 r.p.m. |
| D. | 1500 r.p.m. |
| Answer» E. | |
| 3. |
A single plate clutch, having n = 2, has outer and inner radii 150 mm and 100 mm respectively. The maximum intensity of pressure at any point is 0.1 N/mm2. If the µ is 0.3, determine the power transmitted by a clutch at a speed 3000 r.p.m. |
| A. | 74031 kW |
| B. | 740.31 kW |
| C. | 74.031 kW |
| D. | 706.95 kW |
| Answer» D. 706.95 kW | |
| 4. |
In a single plate clutch if the axial force is equal to 8 kN, find the minimum and maximum intensity of pressure. The outer radius = 100 mm and inner radius = 65 mm. |
| A. | 0.36 N/mm2, 0.56 N/mm2 |
| B. | 0.56 N/mm2, 0.36 N/mm2 |
| C. | 0.36 N/m2, 0.56 N/m2 |
| D. | 0.56 N/m2, 0.36 N/m2 |
| Answer» B. 0.56 N/mm2, 0.36 N/mm2 | |
| 5. |
Find the average pressure in a single plate clutch if the axial force is 5 kN. The inside radius and the outer radius is 30 mm and 70 mm respectively. Assume uniform wear. |
| A. | 398 N/mm2 |
| B. | 0.398 N/m2 |
| C. | 0.398 N/mm2 |
| D. | 398 N/m2 |
| Answer» D. 398 N/m2 | |
| 6. |
Find the axial thrust to be provided by the springs if the maximum intensity of pressure in a single plate clutch should not exceed 0.2 N/mm2. The outer and the inner radius is 75 mm and 35 mm. Assume theory of uniform wear. |
| A. | 1792.01 N |
| B. | 1789.21 N |
| C. | 1723.41 N |
| D. | 1759.29 N |
| Answer» E. | |
| 7. |
For uniform wear, the axial thrust W = ______________ |
| A. | 2 π C (r2 + r1) |
| B. | 2 π C (r1 – r2) |
| C. | 2 π C (r2 – r1) |
| D. | 2 π C (r1 x r2) |
| Answer» C. 2 π C (r2 – r1) | |
| 8. |
When the pressure is uniformly distributed over entire area, then the intensity of pressure is _______________ |
| A. | W/ (π(r12 – r22) |
| B. | W/ (π(r12 + r22) |
| C. | W/ (π(r22 – r12)) |
| D. | W/ (π(r22 x r12)) |
| Answer» B. W/ (π(r12 + r22) | |
| 9. |
The intensity of pressure is minimum at the outer radius that is r1. True or false? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
In a single plate clutch, considering uniform wear, T = nµWR. What is R equal to? |
| A. | 2(r13 + r23) / 3(r12 + r22) |
| B. | 2(r13 – r23) / 3(r12 – r22) |
| C. | (r1 – r2)/2 |
| D. | (r1 + r2)/2 |
| Answer» E. | |
| 11. |
In a single plate clutch, considering uniform pressure, T = nµWR. What is R equal to? |
| A. | 2(r13 + r23) / 3(r12 + r22) |
| B. | 2(r13 – r23) / 3(r12 – r22) |
| C. | (r1 – r2)/2 |
| D. | (r1 + r2)/2 |
| Answer» C. (r1 – r2)/2 | |
| 12. |
Identify the clutch. |
| A. | Single plate clutch |
| B. | Conical clutch |
| C. | Centrifugal clutch |
| D. | Multi plate clutch |
| Answer» B. Conical clutch | |
| 13. |
FOR_UNIFORM_WEAR,_THE_AXIAL_THRUST_W_=_______________?$ |
| A. | 2 π C (r<sub>2</sub> + r<sub>1</sub>) |
| B. | 2 π C (r<sub>1</sub> – r<sub>2</sub>) |
| C. | 2 π C (r<sub>2</sub> – r<sub>1</sub>) |
| D. | 2 π C (r<sub>1</sub> x r<sub>2</sub>) |
| Answer» C. 2 ‚âà√¨‚àö√ë C (r<sub>2</sub> ‚Äö√Ñ√∂‚àö√ë‚àö¬® r<sub>1</sub>) | |
| 14. |
Find the average pressure in a single plate clutch if the axial force is 5 kN. The inside radius and the outer radius is 30 mm and 70 mm respectively. Assume uniform wear.$ |
| A. | 398 N/mm<sup>2</sup> |
| B. | 0.398 N/m<sup>2</sup> |
| C. | 0.398 N/mm<sup>2</sup> |
| D. | 398 N/m<sup>2</sup> |
| Answer» D. 398 N/m<sup>2</sup> | |
| 15. |
Find_the_axial_thrust_to_be_provided_by_the_springs_if_the_maximum_intensity_of_pressure_in_a_single_plate_clutch_should_not_exceed_0.2_N/mm2._The_outer_and_the_inner_radius_is_75_mm_and_35_mm._Assume_theory_of_uniform_wear.$ |
| A. | 1792.01 N |
| B. | 1789.21 N |
| C. | 1723.41 N |
| D. | 1759.29 N |
| Answer» E. | |
| 16. |
A single plate clutch, where n = 2, is required to transmit 30 kW at 3000 r.p.m. Determine the outer and inner radii if the coefficient of friction is 0.3, the ratio of radii is 1.5. pmax = 0.1 N/mm2. |
| A. | 0.111 mm, 0.074 mm |
| B. | 111 mm, 74 mm |
| C. | 74 mm, 111 mm |
| D. | 0.074 mm, 0.111 mm |
| Answer» C. 74 mm, 111 mm | |
| 17. |
A single plate clutch, having n = 2, has outer and inner radii 200 mm and 175 mm respectively. The maximum intensity of pressure at any point is 0.05 N/mm2. If the µ is 0.4 and the power generated by the clutch is equal to 32.384 kW, determine the speed of the clutch.$ |
| A. | 209.44 r.p.m. |
| B. | 2000 r.p.m. |
| C. | 157.08 r.p.m. |
| D. | 1500 r.p.m. |
| Answer» E. | |
| 18. |
A single plate clutch, having n = 2, has outer and inner radii 150 mm and 100 mm respectively. The maximum intensity of pressure at any point is 0.1 N/mm2. If the µ is 0.3, determine the power transmitted by a clutch at a speed 3000 r.p.m.$ |
| A. | 74031 kW |
| B. | 740.31 kW |
| C. | 74.031 kW |
| D. | 706.95 kW |
| Answer» D. 706.95 kW | |
| 19. |
In_a_single_plate_clutch_if_the_axial_force_is_equal_to_8_kN,_find_the_minimum_and_maximum_intensity_of_pressure._The_outer_radius_=_100_mm_and_inner_radius_=_65_mm. |
| A. | 0.36 N/mm<sup>2</sup>, 0.56 N/mm<sup>2</sup> |
| B. | 0.56 N/mm<sup>2</sup>, 0.36 N/mm<sup>2</sup> |
| C. | 0.36 N/m<sup>2</sup>, 0.56 N/m<sup>2</sup> |
| D. | 0.56 N/m<sup>2</sup>, 0.36 N/m<sup>2</sup> |
| Answer» B. 0.56 N/mm<sup>2</sup>, 0.36 N/mm<sup>2</sup> | |
| 20. |
When the pressure is uniformly distributed over entire area, then the intensity of pressure is ______________? |
| A. | W/ (π(r<sub>1</sub><sup>2</sup> – r<sub>2</sub><sup>2</sup>) |
| B. | W/ (π(r<sub>1</sub><sup>2</sup> + r<sub>2</sub><sup>2</sup>) |
| C. | W/ (π(r<sub>2</sub><sup>2</sup> – r<sub>1</sub><sup>2</sup>)) |
| D. | W/ (π(r<sub>2</sub><sup>2</sup> x r<sub>1</sub><sup>2</sup>)) |
| Answer» B. W/ (‚âà√¨‚àö√ë(r<sub>1</sub><sup>2</sup> + r<sub>2</sub><sup>2</sup>) | |
| 21. |
Maximum intensity of pressure is given by ____ |
| A. | C/R |
| B. | C/R<sup>2</sup> |
| C. | C/r<sub>2</sub> |
| D. | C/r<sub>1</sub> |
| Answer» D. C/r<sub>1</sub> | |
| 22. |
In a single plate clutch, the pressure is uniformly distributed. If the outer and inner radii are 100 mm and 70 mm respectively, find the value of R. |
| A. | 76.39 mm |
| B. | 23.48 mm |
| C. | 85.88 mm |
| D. | 34.98 mm |
| Answer» D. 34.98 mm | |
| 23. |
The intensity of pressure is minimum at the outer radius that is r1. True or false? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 24. |
In a single plate clutch, considering uniform pressure, T = nµWR. What is R equal to?$ |
| A. | 2(r<sub>1</sub><sup>3</sup> + r<sub>2</sub><sup>3</sup>) / 3(r<sub>1</sub><sup>2</sup> + r<sub>2</sub><sup>2</sup>) |
| B. | 2(r<sub>1</sub><sup>3</sup> – r<sub>2</sub><sup>3</sup>) / 3(r<sub>1</sub><sup>2</sup> – r<sub>2</sub><sup>2</sup>) |
| C. | (r<sub>1</sub> – r<sub>2</sub>)/2 |
| D. | (r<sub>1</sub> + r<sub>2</sub>)/2 |
| Answer» C. (r<sub>1</sub> ‚Äö√Ñ√∂‚àö√ë‚àö¬® r<sub>2</sub>)/2 | |
| 25. |
Which of these is not a type of clutch? |
| A. | Single disc |
| B. | Conical |
| C. | Centrifugal |
| D. | Cylindrical |
| Answer» E. | |