[A]. blading efficiency
[B]. nozzle efficiency
[C]. gross or stage efficiency
[D]. mechanical efficiency
✅ The correct answer is option A.
Engineering MCQs
The injection pressure in a diesel engine is about
[A]. 10 bar
[B]. 100 bar
[C]. 150 bar
[D]. 500 bar
✅ The correct answer is option B.
In a fuel injection system, the electronic control module (ECM) calculates the optimum fuel-injection volume for the engine condition based on the data received from the sensors, and injects this volume of fuel into the intake manifold at the optimum timing.
[A]. Correct
[B]. Incorrect
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✅ The correct answer is option A.
The firing order for an in-line four cylinder I.C. engine is
[A]. 1-2-3-4
[B]. 1-3-4-2
[C]. 1-2-4-3
[D]. 1-3-2-4
✅ The correct answer is option B.
The pipe joint mostly used for pipes carrying water at low pressures is
[A]. socket joint
[B]. nipple joint
[C]. union joint
[D]. spigot and socket joint
✅ The correct answer is option A.
During a refrigeration cycle, heat is rejected by the refrigerant in a
[A]. compressor
[B]. condenser
[C]. evaporator
[D]. expansion valve
✅ The correct answer is option B.
The constant factor in case of R10 series of preferred numbers is
[A]. 1.06
[B]. 1.12
[C]. 1.26
[D]. 1.58
✅ The correct answer is option C.
The steering of a ship means
[A]. movement of a complete ship up and down in vertical plane about transverse axis
[B]. turning of a complete ship in a curve towards right or left, while it moves forward
[C]. rolling of a complete ship side-ways
[D]. none of the above
✅ The correct answer is option B.
In the relation VTn = C, the value of n for carbide tools is
[A]. 0.1 to 0.2
[B]. 0.20 to 0.25
[C]. 0.25 to 0.40
[D]. 0.40 to 0.55
✅ The correct answer is option B.
Soderberg relation is based on __________ of the material whereas all other failure relation for dynamic loading are based on ultimate strength of the material.
[A]. elastic strength
[B]. yield strength
[C]. shear strength
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✅ The correct answer is option B.