Mechanical Engineering Objective Questions

Mechanical Engineering Objective Questions

1-Indexing head mechanism works with ____ .

(A) Worm and worm gear

(B) Two helical gears

(C) Rack and pinion

(D) Two bevel gear

 

2-A worm and worm wheel drive used to connect ____ .

(A) Parallel shafts

(B) Non-parallel intersecting shafts

(C) None-parallel non-intersecting shafts

(D) Non-parallel non-intersecting shafts at right angles

 

3-Which one of the following is an artificial abrasive?

(A) Silicon carbide

(B) Corrundum

(C) Diamond

(D) Emery

 

4-Heat treatment is done to change

(A) Physical properties of metal

(B) Mechanical properties of metal

(C) Magnetic properties of metal

(D) Electrical properties of metal

 

5-Modulus of rigidity is experimentally the ratio of

(A) Linear stress to longitudinal strain

(B) Hydrostatic stress to volumetric strain

(C) Axial stress to lateral strain

(D) Shear stress to shear strain

 

6-The definition of specific fuel consumption is

(A) Fuel consumption per BHP

(B) Fuel consumption per hour

(C) Fuel consumption per hour per BHP

(D) Fuel consumption per IHP

 

7-The process used in summer air-conditioning is

(A) Humidification

(B) Heating and humidification

(C) Dehumidification

(D) Cooling and dehumidification

 

8-The ratio of total emissive power of a body to the total emissive power of a black body is called:

(A) Reflectivity

(B) Absorptivity

(C) Transmissivity

(D) Emissivity

 

9-The torsion equation is given by:

(A) T/J = fs/R = Cθ/L

(B) T/ fs = R/J = Cθ/L

(C) T/ R = fs/J = Cθ/L

(D) T/J = fs = R = Cθ/L

 

10-Which of the following metal is magnetic?

(A) Aluminium

(B) Nickel

(C) Copper

(D) Magnesium

 

ANSWERS:

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