✅ The correct answer is option C.
Mechanical Engineering MCQs
The velocity at which the laminar flow stops, is known as
velocity of approach
lower critical velocity
higher critical velocity
none of these
✅ The correct answer is option B.
In open cycle turbo-jet engines used in military aircraft, reheating the exhaust gas from the turbine by burning, more fuel is used to increase the
thrust and range of aircraft
efficiency of the engine
both (a) and (b)
none of these
✅ The correct answer is option A.
The total pressure on the top of a closed cylindrical vessel competely filled up with a liquid is
directly proportional to (radius)2
inversely proportional to (radius)2
directly proportional to (radius)4
inversely proportional
✅ The correct answer is option C.
Coplaner concurrent forces are those forces which
meet at one point, but their lines of action do not lie on the same plane
do not meet at one point and their lines of action do not lie on the same plane
meet at one point and their lines of action also lie on the same plane
do not meet at one poi
✅ The correct answer is option C.
Otto cycle is also known as
constant pressure cycle
constant volume cycle
constant temperature cycle
constant temperature a
✅ The correct answer is option B.
The advancing of spark timing in spark ignition engines will __________ knocking tendency.
increase
reduce
not effect
✅ The correct answer is option A.
Projection welding is a
continuous spot welding process
multi-spot welding process
arc welding process
process used for joini
✅ The correct answer is option B.
In order to determine the effects of a force, acting on a body, we must know
magnitude of the force
line of action of the force
nature of the force i,e. whether the force is push or pull
all of the above
✅ The correct answer is option D.
When coal is first dried and then crushed to a fine powder by pulverising machine, the resulting fuel is called
wood charcoal
bituminous coal
briquetted coal
none of these
✅ The correct answer is option D.