below which a gas does not obey gas laws
above which a gas may explode
below which a gas is always liquified
above which a gas will
✅ The correct answer is option D.
Engineering MCQs
Dew point temperature is the temperature of air recorded by a thermometer, when the moisture present in it begins to condense.
Correct
Incorrect
✅ The correct answer is option A.
In a steam engine, the earlier cut-off with a simple slide valve may be obtained by increasing the steam lap and the angle of advance of the eccentric but keeping constant the travel and lead of the valve, This method will
cause withdrawing or throttling of steam
reduce length of effective stroke of piston
reduce maximum opening of port to steam
all of these
✅ The correct answer is option C.
The contact ratio for gears is
zero
less than one
greater than one
infinity
✅ The correct answer is option C.
In a force-closed pair, the two elements of a pair are not held together mechanically.
Agree
Disagree
✅ The correct answer is option B.
The specific cutting energy used for establishing the machinability of the metal depends upon its
coefficient of friction
microstructure
work hardening characteristics
all of these
✅ The correct answer is option D.
The cavitation in reaction turbines is avoided, to a great extent by
installing the turbine below the tail race level
using stainless steel runner of the turbine
providing highly polished blades to the runner
all of the above
✅ The correct answer is option D.
A basic difference between the spark ignition engine and the Diesel engine is that the
Diesel engine compresses air alone instead of an air-fuel mixture
air temperature ignites the fuel in the Diesel engine
fuel is sprayed into the combustion chamber in the Diesel engine as the piston nears T.D.C. on the compression stroke
all of the above
✅ The correct answer is option D.
Fire tube boilers are limited to a maximum working pressure of
0.17 MN/m2
1.7 MN/m2
17 MN/m2
170 MN/m2
✅ The correct answer is option B.
If in the equation pvn = C, the value of n = ∝ , then the process is called
constant volume process
adiabatic process
constant pressure process
isothermal process
✅ The correct answer is option A.