Mechanical Engineering MCQ (Multiple Choice Questions)

Mechanical Engineering MCQ (Multiple Choice Questions)

1-Coplanar concurrent forces are those forces which

(A) meet at one point, but their line of action do not lie on the same plane

(B) do not meet at one point and their lines of action also do not lie on the same plane

(C) meet at one point and their lines of action also lie on the same plane

(D) do not meet at one point, but their lines of action lie on the same plane

 

2-Most widely used conducting materials are

(A) Gold and Silver

(B) Copper and Aluminium

(C) Tungsten and Platinum

(D) Germanium and Silicon

 

3-A continuous beam is one which is

(A) fixed at both ends

(B) fixed at one end and free at the other end

(C) supported on more than two supports

(D) extending beyond the supports

 

4-Which of the following properties is not desirable for bearing alloy?

(A) Good wearing quality

(B) Low coefficient of friction

(C) Low thermal conductivity

(D) High melting point

 

5-The Darcy-Weisbach equation is commonly used for finding

(A) Loss of head due to friction in pipes

(B) Loss of head due to turbulence

(C) Loss of head due to bend in pipe

(D) Loss of head due to sudden enlargement

 

6-The radial heat transfer rate through hollow cylinder increases as the ratio of outer radius to inner radius

(A) decreases

(B) increases

(C) remains constant

(D) none of the above

 

7-In the formation of Lewis equation for toothed gearing, it is assumed that tangential load acts on the

(A) root of the tooth

(B) pitch point

(C) tip of the tooth

(D) none of the above

 

8-In design of clutches, it is more logical and safer to use

(A) Uniform wear theory

(B) uniform pressure theory

(C) contact stress theory

(D) none of the above

 

9-The governor which is hunting is

(A) more sensitive

(B) less sensitive

(C) more stable

(D) none of the above

 

10-The reheating of steam in a steam turbine

(A) increases the work done through the turbine

(B) reduces erosion of the turbine blades

(C) increases the thermal efficiency of turbine

(D) all of the above

 

ANSWERS:

1-(C), 2-(B), 3-(C), 4-(D), 5-(A), 6-(A), 7-(C), 8-(A), 9-(A), 10-(D)