water
soluble oil
dry
heavy oils
✅ The correct answer is option B.
Mechanical Engineering MCQs
The loss of head at entrance in a pipe is (where v = Velocity of liquid in the pipe)
✅ The correct answer is option B.
If the spark plug deposit indicates black coating of soot, it indicates that the engine has been generally operating on
too lean mixture
stoichiometric mixture
most economical mixture
too rich mixture
✅ The correct answer is option D.
The teeth of hacksaw blade are bent
towards right
towards left
alternately towards right and left and every third or fourth left straight
may be bent in any dir
✅ The correct answer is option C.
Which of the following is a point imperfection?
Vacancy
Interstitial imperfection
Frenkel imperfection
all of these
✅ The correct answer is option D.
Ultra-sonic machining is best suited for
tool steels
sintered carbides
glass
all of these
✅ The correct answer is option D.
The actual power supplied by the engine crankshaft is called
indicated power
brake power
frictional power
none of these
✅ The correct answer is option B.
A jet of water enters and leaves a fixed curved vane tangentially. The force of jet along perpendicular to the vane is zero.
TRUE
FALSE
✅ The correct answer is option B.
The compressive strength of brittle materials is __________ its tensile strength.
equal to
less than
greater than
✅ The correct answer is option C.