Mechanical Engineering MCQ

Mechanical Engineering MCQ

1-In electro-discharge machining, the tool and work piece are submerged in

(A) Kerosene oil

(B) Sulfuric acid

(C) Aluminium slurry

(D) Nitric acid

 

2-Bernoulli’s Equation is obtained by

(A) Integration of Euler’s Equation

(B) Differentiation of Euler’s Equation

(C) Double differentiation of Euler’s Equation

(D) Newton’s law of motion

 

3-If the value of A2 is given as 0.52, R = 2, X-bar = 2, the UCL of the X-bar chart will be

(A) 0.96

(B) 3.04

(C) 3.48

(D) 0.52

 

4-Chaplet is used to

(A) Increase the cooling rate of molten metal

(B) Decrease the cooling rate of molten metal

(C) Compensate the shrinkage

(D) Support the core

5-Which of the following plant layout is most suitable for automobile manufacturing units?

(A) Product layout

(B) Process layout

(C) Fixed position layout

(D) Group layout

6-In case of laminar flow, the loss of pressure head is proportional to:

(A) Velocity

(B) Square of velocity

(C) Cube of velocity

(D) Half of velocity

 

7-What is the temperature range of delta iron?

(A) 0° C to 768° C

(B) 768° C to 900° C

(C) 900° C to 1400° C

(D) 1400° C to 1530° C

 

8-What is the angle between the direction of follower motion and normal to the pitch curve known as?

(A) Pitch angle

(B) Prime angle

(C) Pressure angle

(D) Base angle

9-In the case of capillarity, the rise or fall of head ‘h’ in a capillary tube of diameter ‘d’, liquid surface tension ‘σ’ and specific weight w is given by

(A) 4σ/wd

(B) 4dσ/w

(C) 4wd/σ

(D) 4d/σw

10-Cavitation begins when

(A) The pressure is increased rapidly

(B) The Flow is increased suddenly

(C) The pressure becomes more than the critical pressure

(D) The pressure falls below its vapour pressure and sudden bursting the bubble in high pressure zone

 

ANSWERS:

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