α1 = α2 and β1 = β2
α1 = β1 and α2 = β2
α1 < β1 and α2 > β2
α1 = β2 and β1 = α2
✅ The correct answer is option D.
Mechanical Engineering MCQs
Two equal and opposite parallel forces whose lines of action are different form a couple.
Correct
Incorrect
✅ The correct answer is option A.
In case of a Diesel car, the pressure at the end of compression is of the order of
15 bar
25 bar
35 bar
45 bar
✅ The correct answer is option D.
The efficiency of a riveted joint is the ratio of the strength of the joint to the strength of the solid plate.
TRUE
FALSE
✅ The correct answer is option A.
The materials used for cylinder block are
cast iron and steel
cast iron and aluminium alloy
steel and aluminium alloy
brass and steel
✅ The correct answer is option B.
A good steam boiler is one which produces maximum quantity of steam with the given fuel
Agree
Disagree
✅ The correct answer is option A.
The addition of which of the following improves machining of copper?
Sulphur
Vanadium
Tin
Zinc
✅ The correct answer is option A.
The factor which affects the tool life is
tool geometry
cutting speed
feed rate
all of these
✅ The correct answer is option D.
In order to completely specify angular displacement by a vector, it must fix
direction of the axis of rotation
magnitude of angular displacement
sense of angular displacement
all of these
✅ The correct answer is option D.
A lathe with four steps on the cone pulley and with backgears will have
four direct speeds
four indirect speeds
four direct and four indirect speeds
eight indirect speeds
✅ The correct answer is option C.