MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Kinematics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
For a power screw having square threads with lead angle of 450 and coefficient of friction of 0.15 between screw and nut, the efficiency of the power screw, neglecting collar friction, is given by |
| A. | 74% |
| B. | 64% |
| C. | 54% |
| D. | 44% |
| Answer» B. 64% | |
| 2. |
Centrifugal clutches are designed to provide automatic and smooth engagement of load to driving member. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
The axial force (We) required for engaging a cone clutch is given by |
| A. | Wn sin α |
| B. | Wn (sin α + µ cos α ) |
| C. | Wn (sin α + 0.25 µ cos α ) |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 4. |
In case of a multiple disc clutch, if n1 are the number of discs on the driving shaft and n2 are the number of the discs on the driven shaft, then the number of pairs of contact surfaces will be |
| A. | n1 + n2 |
| B. | n1 + n2 – 1 |
| C. | n1 + n2 + 1 |
| D. | none of the mentioned |
| Answer» C. n1 + n2 + 1 | |