Mechanical Engineering - Machine Design

1. 

A key is normally made from a cold rolled mild steel bars.

A. Correct
B. Incorrect

Answer: Option A

Explanation:

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2. 

Which of following statement is correct, for the two shafts connected in parallel?

A. Torque in each shaft is the same
B. Shear stress in each shaft is the same
C. Angle of twist of each shaft is the same
D. Torsional stiffness of each shaft is the same

Answer: Option C

Explanation:

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3. 

Lewis form factor for the 20° full depth involute system is equal to 0.154 - 0.841/T.

A. Correct
B. Incorrect

Answer: Option A

Explanation:

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4. 

The railway carriage couplings have

A. square threads
B. acme threads
C. knuckle threads
D. buttress threads

Answer: Option C

Explanation:

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5. 

A shaft is subjected to

A. bending stresses
B. shear stresses
C. combined bending and shear stresses
D. all of these

Answer: Option D

Explanation:

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