MCQOPTIONS
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MCQOPTIONS
This section includes 2 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Kinematics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A screw jack has square threads and the lead angle of the thread is . The screw jack will be self locking when the coefficient of friction ( ) is |
| A. | > tan |
| B. | = sin |
| C. | = cot |
| D. | = cosec |
| Answer» B. = sin | |
| 2. |
If denotes the lead angle and , the angle of friction, then the efficiency of the screw is written as |
| A. | tan( )/tan |
| B. | tan /tan ( ) |
| C. | tan( + )/tan |
| D. | tan /tan ( + ) |
| Answer» E. | |