MCQOPTIONS
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MCQOPTIONS
This section includes 27 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 multi plate clutch, having n1= 2 and n2 = 1, has outer and inner radii 1000 mm and 600 mm respectively. The maximum intensity of pressure at any point is 0.2 N/mm2. If the µ is 0.25, determine the speed of the clutch if the power generated = 31582.807 kW. |
| A. | 2500 r.p.m. |
| B. | 261.8 r.p.m. |
| C. | 2000 r.p.m. |
| D. | 209.44 r.p.m. |
| Answer» B. 261.8 r.p.m. | |
| 2. |
A plate clutch has three discs on driving shaft and two discs on driven shaft. The outer radius of the contact surfaces is 100 mm and inner radius 50 mm. Assuming uniform pressure and µ = 0.3; find the total spring load pressing plates together to transmit 35 kW at 1600r.p.m. |
| A. | 2372.3 N |
| B. | 2260.7 N |
| C. | 2401.8 N |
| D. | 2131.4 N |
| Answer» C. 2401.8 N | |
| 3. |
A single plate clutch, having n1 = 3 and n2 = 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, determine the power transmitted by a clutch at a speed 1500 r.p.m. |
| A. | 32384 x 103W |
| B. | 64.768 W |
| C. | 64768 kW |
| D. | 64768 W |
| Answer» E. | |
| 4. |
A multi-disc clutch has 3 discs on the driving shaft and 2 on the driven shaft. The outer radius is 100 mm and inside radius 40 mm. Considering uniform wear and µ = 0.25, find the maximum axial intensity of pressure between the discs for transmitting 30 kW at 1000 r.p.m. |
| A. | 0.4071 N/m2 |
| B. | 40.71 N/mm2 |
| C. | 407.1 N/m2 |
| D. | 0.4071 N/mm2 |
| Answer» E. | |
| 5. |
A multi-disc clutch has 3 discs on the driving shaft and 2 on the driven shaft. The outer radius is 120 mm and inside radius 60 mm. Considering uniform wear and µ = 0.3, find the Find the value of W for transmitting 25 kW at 1500r.p.m. |
| A. | 651 N/m2 |
| B. | 651 N/mm2 |
| C. | 0.0651 N/m2 |
| D. | 0.0651 N/mm2 |
| Answer» E. | |
| 6. |
Calculate the maximum and minimum intensity of pressure in multi plate clutch when the axial force is 5 kN assuming uniform wear. Inner radius = 20 mm and outer radius = 40 mm. |
| A. | 1.989 N/mm2, 0.994 N/mm2 |
| B. | 0.994 N/mm2, 1.989 N/mm2 |
| C. | 1.989 N/m2, 0.994 N/m2 |
| D. | 0.994 N/m2, 1.989 N/m2 |
| Answer» B. 0.994 N/mm2, 1.989 N/mm2 | |
| 7. |
A multi-disc clutch has 6 discs on the driving shaft and 4 on the driven shaft. Find the number of pairs of contact surfaces. |
| A. | 3 |
| B. | 10 |
| C. | 9 |
| D. | 11 |
| Answer» D. 11 | |
| 8. |
In a multi plate clutch, number of pairs of contact surfaces (n) = ________ |
| A. | n1 – n2 + 1 |
| B. | n1 – n2 – 1 |
| C. | n1 + n2 – 1 |
| D. | n1 + n2 + 1 |
| Answer» D. n1 + n2 + 1 | |
| 9. |
In a multi plate clutch, number of discs on the driving shaft is given by n1. True or false? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
For a single plate clutch, n = 2, whereas for a multi plate clutch, n can take any values ≥ 2. True or false? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
In a multi plate clutch, T = 150 N-m, n = 4, µ = 0.3 and R = 0.1 m. Find the axial thrust. |
| A. | 18 |
| B. | 1800 |
| C. | 1250 |
| D. | 200 |
| Answer» D. 200 | |
| 12. |
In a multi 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. | |
| 13. |
In a multi 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 | |
| 14. |
A_MULTI-DISC_CLUTCH_HAS_6_DISCS_ON_THE_DRIVING_SHAFT_AND_4_ON_THE_DRIVEN_SHAFT._FIND_THE_NUMBER_OF_PAIRS_OF_CONTACT_SURFACES.?$ |
| A. | 3 |
| B. | 10 |
| C. | 9 |
| D. | 11 |
| Answer» D. 11 | |
| 15. |
A multi-disc clutch has 3 discs on the driving shaft and 2 on the driven shaft. The outer radius is 120 mm and inside radius 60 mm. Considering uniform wear and µ = 0.3, find the Find the value of W for transmitting 25 kW at 1500r.p.m.$# |
| A. | 651 N/m<sup>2</sup> |
| B. | 651 N/mm<sup>2</sup> |
| C. | 0.0651 N/m<sup>2</sup> |
| D. | 0.0651 N/mm<sup>2</sup> |
| Answer» E. | |
| 16. |
Calculate_the_maximum_and_minimum_intensity_of_pressure_in_multi_plate_clutch_when_the_axial_force_is_5_kN_assuming_uniform_wear._Inner_radius_=_20_mm_and_outer_radius_=_40_mm.$ |
| A. | 1.989 N/mm<sup>2</sup>, 0.994 N/mm<sup>2</sup> |
| B. | 0.994 N/mm<sup>2</sup>, 1.989 N/mm<sup>2</sup> |
| C. | 1.989 N/m<sup>2</sup>, 0.994 N/m<sup>2</sup> |
| D. | 0.994 N/m<sup>2</sup>, 1.989 N/m<sup>2</sup> |
| Answer» B. 0.994 N/mm<sup>2</sup>, 1.989 N/mm<sup>2</sup> | |
| 17. |
A multi plate clutch, having n1= 2 and n2 = 1, has outer and inner radii 1000 mm and 600 mm respectively. The maximum intensity of pressure at any point is 0.2 N/mm2. If the µ is 0.25, determine the speed of the clutch if the power generated = 31582.807 kW.$ |
| A. | 2500 r.p.m. |
| B. | 261.8 r.p.m. |
| C. | 2000 r.p.m. |
| D. | 209.44 r.p.m. |
| Answer» B. 261.8 r.p.m. | |
| 18. |
A plate clutch has three discs on driving shaft and two discs on driven shaft. The outer radius of the contact surfaces is 100 mm and inner radius 50 mm. Assuming uniform pressure and µ = 0.3; find the total spring load pressing plates together to transmit 35 kW at 1600r.p.m.$ |
| A. | 2372.3 N |
| B. | 2260.7 N |
| C. | 2401.8 N |
| D. | 2131.4 N |
| Answer» C. 2401.8 N | |
| 19. |
A single plate clutch, having n1 = 3 and n2 = 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, determine the power transmitted by a clutch at a speed 1500 r.p.m.$ |
| A. | 32384 x 10<sup>3</sup>W |
| B. | 64.768 W |
| C. | 64768 kW |
| D. | 64768 W |
| Answer» E. | |
| 20. |
A multi-disc clutch has 3 discs on the driving shaft and 2 on the driven shaft. The outer radius is 100 mm and inside radius 40 mm. Considering uniform wear and µ = 0.25, find the maximum axial intensity of pressure between the discs for transmitting 30 kW at 1000 r.p.m.$ |
| A. | 0.4071 N/m<sup>2</sup> |
| B. | 40.71 N/mm<sup>2</sup> |
| C. | 407.1 N/m<sup>2</sup> |
| D. | 0.4071 N/mm<sup>2</sup> |
| Answer» E. | |
| 21. |
In a multi plate clutch, number of pairs of contact surfaces (n) = _______? |
| A. | n<sub>1</sub> – n<sub>2</sub> + 1 |
| B. | n<sub>1</sub> – n<sub>2</sub> – 1 |
| C. | n<sub>1</sub> + n<sub>2</sub> – 1 |
| D. | n<sub>1</sub> + n<sub>2</sub> + 1 |
| Answer» D. n<sub>1</sub> + n<sub>2</sub> + 1 | |
| 22. |
In a multi plate clutch, number of discs on the driving shaft is given by n1. True or false? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 23. |
For a single plate clutch, n = 2, whereas for a multi plate clutch, n can take any values ‚â• 2. True or false?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 24. |
Maximum intensity of pressure for multi plate clutch 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> | |
| 25. |
In a multi plate clutch, T = 150 N-m, n = 4, µ = 0.3 and R = 0.1 m. Find the axial thrust.$ |
| A. | 18 |
| B. | 1800 |
| C. | 1250 |
| D. | 200 |
| Answer» D. 200 | |
| 26. |
In a multi 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 | |
| 27. |
In a multi plate clutch, the formula for T is given by ______ |
| A. | n.µ.W.R |
| B. | n.µ.W.r<sub>1</sub> |
| C. | n.µ.W.r<sub>2</sub> |
| D. | n.µ.W.(r<sub>1</sub>+r<sub>2</sub>) |
| Answer» B. n.¬¨¬®¬¨¬µ.W.r<sub>1</sub> | |