Related Questions

The general law of expansion or compression is pvn = C, The process is said to be hyperbolic, if n is equal to
A 0
B 1
C γ
D ∝
Temperature of gases at end of compression as compared to exhaust gases in a gas turbine is
A Higher
B Lower
C Equal
D Can't be compared
When the expansion or compression takes place according to the law pvn = C, the process is known as
A Isothermal process
B Adiabatic process
C Hyperbolic process
D Polytropic process
In Meyer's expansion valve, the expansion valve is driven by an eccentric having an angle of advance from
A 50° - 60°
B 60° - 70°
C 70° - 80°
D 80° - 90°
By compounding the expansion of steam in two or more cylinders, the ratio of expansion
A Does not change
B Increases
C Decreases
D None of these
In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is _________ the low pressure cylinder.
A Equal to
B Less than
C More than
D None of these
A process, in which the temperature of the working substance remains constant during its expansion or compression, is called
A Adiabatic process
B Isothermal process
C Hyperbolic process
D Polytropic process
In an ideal gas turbine plant, it is assumed that the compression and expansion processes are
A Isothermal
B Isentropic
C Polytropic
D None of these
In a vapour compression system, the condition of refrigerant before entering the expansion or throttle valve is
A High pressure saturated liquid
B Wet vapour
C Very wet vapour
D Dry vapour
In diesel engine, the compression ratio in comparison to expansion ratio is
A Same
B Less
C More
D Variable

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