Explore topic-wise MCQs in Machine Kinematics Questions and Answers.

This section includes 2 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.

A screw jack has square threads and the lead angle of the thread is α. The screw jack will be self locking when the coefficient of friction (μ) is

A. μ > tan α
B. μ = sin α
C. μ = cot α
D. μ = cosec α
Answer» B. μ = sin α
Discussion
2.

If α denotes the lead angle and φ, the angle of friction, then the efficiency of the screw is written as

A. tan(α − φ)/tanα
B. tanα/tan (α − φ)
C. tan(α + φ)/tanα
D. tanα/tan (α + φ)
Answer» E.
Discussion