TRUE
FALSE
✅ The correct answer is option B.
Engineering MCQs
The ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body. This statement is known as
Wien’s law
Stefan’s law
Kirchhoff’s law
Planck’s law
✅ The correct answer is option C.
The correct sequence of the following parameters in order of their maximum to minimum influence on tool life is
feed rate, depth of cut, cutting speed
depth of cut, cutting speed, feed rate
cutting speed, feed rate, depth of cut
feed rate, cutting spe
✅ The correct answer is option C.
The planes, which carry no shear stress, are known as principal planes.
TRUE
FALSE
✅ The correct answer is option A.
The height of a Watt’s governor is
directly proportional to speed
directly proportional to (speed)2
inversely proportional to speed
inversely proportional
✅ The correct answer is option D.
A slider moves at a velocity v on a link revolving at ω rad/s. The coriolis component of acceleration is
ωv
2 ωv
ω2v
2 ωv2
✅ The correct answer is option B.
The number of buckets on the periphery of a Pelton wheel is given by
✅ The correct answer is option C.
The shock absorbing capacity of a bolt may be increased by
increasing its shank diameter
decreasing its shank diameter
tightening the bolt properly
making the shank diame
✅ The correct answer is option B.
When the radius of rotation of balls __________ as the equilibrium speed increases, the governor is said to be unstable.
remains constant
decreases
increases
✅ The correct answer is option B.
In a four stroke cycle diesel engine, the inlet valve
opens at 20° before top dead centre and closes at 40° after bottom dead centre
opens at 20° after top dead centre and closes at 20° before bottom dead centre
opens at top dead centre and closes at bottom dead centre
may open and close any
✅ The correct answer is option A.