zero
minimum
maximum
✅ The correct answer is option C.
Engineering MCQs
Coefficient of discharge Cd is equal to (where Cc = Coefficient of contraction, Cv = Coefficient of velocity, and Cr = Coefficient of resistance)
Cc x Cv
Cc x Cr
Cv x Cr
Cc/Cr
✅ The correct answer is option A.
Creep in belt is due to
material of the belt
material of the pulley
uneven extensions and contractions due to varying tension
all of the above
✅ The correct answer is option C.
The pressure of steam, in reaction turbines, is reduced in the fixed blades as well as in moving blades.
Correct
Incorrect
✅ The correct answer is option A.
De-Laval turbines are mostly used
where low speeds are required
for small power purposes and low speeds
for large power purposes
for small power purpos
✅ The correct answer is option D.
A pouring basin acts as a reservoir for the molten metal.
Agree
Disagree
✅ The correct answer is option A.
The coefficient of fluctuation of speed is __________ of maximum fluctuation of speed and the mean speed.
sum
difference
product
ratio
✅ The correct answer is option D.
In a vapour compression refrigeration system, a throttle valve is used in place of an expander because
it considerably reduces mass of the system
it improves the C.O.P., as the condenser is small
the positive work in isentropic expansion of liquid is very small
it leads to significan
✅ The correct answer is option C.
A two stroke cycle engine gives __________ mechanical efficiency than a four stroke cycle engine.
higher
lower
✅ The correct answer is option A.
18-4-1 high speed steel contains
vanadium 4%, chromium 18% and tungsten 1%
vanadium 1%, chromium 4% and tungsten 18%
vanadium 18%, chromium 1% and tungsten 4%
none of the above
✅ The correct answer is option B.