pressure head + kinetic head + potential head
pressure head – (kinetic head + potential head)
potential head – (pressure head + kinetic head)
kinetic head – (pressu
✅ The correct answer is option A.
Engineering MCQs
When a circular bar tapering uniformly from diameter d1, at one end to diameter d2 at the other end, is subjected to an increase in temperature (t), then the thermal stress induced is (where α = Coefficient of linear expansion, and E = Modulus of elasticity for the bar material)
✅ The correct answer is option A.
For a multi-stage compressor, the polytropic efficiency is constant throughout for all the stages.
TRUE
FALSE
✅ The correct answer is option A.
The cutting speed of a drill varies from point to point on the cutting edge of the drill.
Correct
Incorrect
✅ The correct answer is option A.
The compressor capacity will be __________ if the temperature of intake air is lowest.
lowest
highest
✅ The correct answer is option B.
A hemispherical tank of radius (R) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to lower the level of liquid from (H1) to (H2) will be
none of the above
✅ The correct answer is option C.
The size of engine cylinder is referred in terms of its
diameter and bore
displacement and efficiency
bore and stroke
bore and length
✅ The correct answer is option C.
The compression ratio in petrol engines is kept low as compared to diesel engines because higher compression ratio in petrol engines would lead to pre-ignition of fuel.
Agree
Disagree
✅ The correct answer is option A.
The condition for the reversibility of a cycle is
the pressure and temperature of the working substance must not differ, appreciably, from those of the surroundings at any stage in the process
all the processes, taking place in the cycle of operation, must be extremely slow
the working parts of the engine must be friction free
all of the above
✅ The correct answer is option D.
Which of the following is not a part of the chassis ?
Wheels
Front axle
Steering system
Seats
✅ The correct answer is option D.