

MCQOPTIONS
Saved Bookmarks
This section includes 3 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. |
The efficiency of the a screw jack is maximum, when |
A. | α = 450 + ɸ/2 |
B. | α = 450 – ɸ/2 |
C. | α = 900 + ɸ |
D. | α = 900 – ɸ |
Answer» C. α = 900 + ɸ | |
2. |
Efficiency of a screw jack is given by |
A. | tan(α + ɸ)/tanα |
B. | tanα/ tan(α + ɸ) |
C. | tan(α – ɸ)/tanα |
D. | tanα/tan(α – ɸ) |
Answer» C. tan(α – ɸ)/tanα | |
3. |
A body of weight W is required to move up the rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by |
A. | P = W tanα |
B. | P = W tan (α + ɸ) |
C. | P = W (sinα + μ cosα) |
D. | P = W (cosα + μ sinα) |
Answer» D. P = W (cosα + μ sinα) | |