Correct
Incorrect
✅ The correct answer is option B.
Mechanical Engineering MCQs
The volumetric strain is the ratio of the
original thickness to the change in thickness
change in thickness to the original thickness
original volume to the change in volume
change in volume to th
✅ The correct answer is option D.
In hot machining, solid carbide tools are preferred over high speed steel tools.
TRUE
FALSE
✅ The correct answer is option A.
The floating position of the holding fixture in a rotary transfer device is used to
improve the accuracy of location
reduce the tendency to over-index
improve upon the acceleration and deceleration characteristics
reduce the cycle time
✅ The correct answer is option D.
Head developed by a centrifugal pump is
proportional to diameter of impeller
proportional to speed of impeller
proportional to diameter and speed of impeller
none of the above
✅ The correct answer is option C.
When a body is immersed wholly or partially in a liquid, it is lifted up by a force equal to the weight of liquid displaced by the body. This statement is called
Pascal’s law
Archimede’s principle
principle of floatation
Bernoulli’s theorem
✅ The correct answer is option B.
The process of finding out the resultant force is called __________ of forces.
composition
resolution
✅ The correct answer is option A.
If V1 is the jet velocity and V0 is the vehicle velocity, then the propulsive efficiency of a rocket is given by
✅ The correct answer is option A.
Two helical springs of the same material and of equal circular cross-section, length and number of turns, but having radii 80 mm and 40 mm, kept concentrically (smaller radius spring within the larger radius spring), are compressed between two parallel planes with a load W. The inner spring will carry a load equal to
W/2
2 W/3
W/9
8 W/9
✅ The correct answer is option B.
With the same tool life, the maximum material per minute is removed by
increasing the cutting speed
decreasing the cutting speed
increasing the depth of cut
increasing the feed ra
✅ The correct answer is option C.