Mechanical Engineering MCQs

2075 MCQs  (Page 9 of 208)

Attempt Mechanical Engineering Mcqs Quiz
Axial flow compressor has the following advantage over centrifugal compressor__________________?
A. Larger air handling ability per unit frontal area
B. Higher pressure ratio per stage
C. Aerofoil blades are used
D. Higher average velocities
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Atmospheric pressure is 1.03 kg/cm and vapour pressure is 0.03 kg/cm . The air pressure will be_____________________ ?
A. 1.03 kg/cm2
B. 1.06 kg/cm2
C. 1.00 kg/cm2
D. 0.53 kg/cm2
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Axial flow compressor resembles____________________ ?
A. Centrifugal pump
B. Reciprocating pump
C. Turbine
D. Sliding vane compressor
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The vloumetric efficiency of compressor with increase in compression ratio will ___________________?
A. Increase
B. Decrease
C. Remain same
D. May increase/decrease depending on clearance volume
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The work ratio of simple gas turbine cycle depends on_________________?
A. Pressure ratio
B. Maximum cycle temperature
C. Minimum cycle temperature
D. All of the above
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Open cycle gas turbine works on___________________?
A. Brayton or atkinson cycle
B rAnkine cycle
C. Carnot cycle
D. Erricsson cycle
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Gas turbines for power generaion are normally used___________________?
A. To supply base load requirements
B. To supply peak load requirements
C. To enable start thermal power plant
D. In emergency
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Surging phenomenon in centrifugal com-pressor depends on ___________________?Pick up wrong statement ?
A. Mass flow rate
B. Pressure ratio
C. Change in load
D. Stagnation pressure at the outlet
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The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called__________________?
A. Pressure ratio
B. Pressure coefficient
C. Degree of reaction
D. Slip factor
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Actual compression curve is___________________?
A. Same as isothermal
B. Same as adiabatic
C. Better than isothermal and adiabatic
D. In between isothermal and adiabatic
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Word of the Day
27 Sep
Undesirable
not wanted or desirable because harmful, objectionable, or unpleasant.
غیر مطلوب، ناروا، نامناسب

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