Mechanical Engineering MCQ

21-A shaft turns 150 rpm under a torque of 1500 Nm. The power transmitted is

(A) 5π kW

(B) 7.5π kW

(C) 10π kW

(D) 15π Kw

 

22-What is the ratio of Inertia force to viscous force called?

(A) Mach’s number

(B) Froude number

(C) Weber number

(D) Reynold’s number

 

23-Crowning on pulley helps

(A) In decreasing the slip of the belt

(B) In increasing the slip of the belt

(C) To increase pulley life

(D) To decrease pulley life

 

24-Productivity can be improved by

(A) Increasing inputs for constant outputs

(B) Decreasing outputs for constant inputs

(C) Increasing inputs and outputs both in same proportion

(D) Decreasing inputs for constant outputs

 

25-Which of the following is a part of the steering linkage?

(A) Pitman arm

(B) Wheel rim

(C) Backing plate

(D) Master cylinder

 

26-The initial clearance left between the leaves in a laminated leaf spring is known as

(A) Clearance

(B) Gap

(C) Nip

(D) Void

 

27-The working of hydraulic brake system follows

(A) The Pascal’s law of hydraulics

(B) The Bernoulli’s principle

(C) The Newton’s law of cooling

(D) The Archimedes principle

 

28-The magnitude of buoyant force can be determined by:

(A) Newton’s second law of motion

(B) Archimedes principle

(C) Principle of moments

(D) Newton’s third law of motion

 

29-Which of the following chucks in lathe machine is known as Universal Chuck?

(A) Magnetic Chuck

(B) Face plate

(C) Three jaws chuck

(D) Four jaws chuck

 

30-Heating of dry steam above saturation temperature is known as

(A) Superheating

(B) Supersaturation

(C) Super tempering

(D) Saturation heating

 

ANSWERS:

21-(D), 22-(D), 23-(A), 24-(D), 25-(A), 26-(C), 27-(A), 28-(B), 29-(C), 30-(A)