A. Two temperatures only
B. Pressure of working fluid
C. Mass of the working fluid
D. Mass and pressure both of the working fluid
Related Mcqs:
- The following heat engine produces power of 100,000 kW. The heat engine operates between 800 K and 300 K. It has a thermal efficiency equal to 50% of that of the Carnot engine for the same temperature. The rate at which heat is absorbed from the hot reservoir is____________________?
A. 100,000 kW
B. 160,000 kW
C. 200,000 kW
D. 320,000 kW - The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 > T2) is given by (T1 – T2)/T1. The co-efficient of performance (C.O.P.) of a Carnot heat pump operating between T1 and T2 is given by__________________?
A. T1/(T1-T2)
B. T2/(T1-T2)
C. T1/T2
D. T2/R1 - Thermal efficiency of a Carnot engine can approach 100%, only when the temperature of the__________________?
A. Cold reservoir approaches zero
B. Hot reservoir approaches infinity
C. Either A. or B
D. Neither A. nor B - Efficiency of a Carnot engine working between temperatures T1 and T2 (T1 < T) is ________________?
A. (T2 – T1)/T2
B. (T2 – T1)/T1
C. (T1 – T2)/T2
D. (T1 – T2)/T1 - Co-efficient of performance for a reversed Carnot cycle working between temperatures T1 and T2 (T1 > T2) is ___________________?
A. T2/(T1 – T2)
B. T1/(T1 – T2)
C. (T1 – T2)/T1
D. (T1 – T2)/T2 - The efficiency of an Otto engine compared to that of a diesel engine, for the same compression ratio will be _______________?
A. More
B. Less
C. Same
D. Data insufficient to predict - A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the co-efficient of performance (COP) for a given refrigeration effect ?
A. Vapor compression cycle using expansion valve
B. Air refrigeration cycle
C. Vapor compression cycle using expansion engine
D. Carnot refrigeration cycle - The shape of T-S diagram for Carnot Cycle is a__________________?
A. Rectangle
B. Rhombus
C. Trapezoid
D. Circle - A Carnot cycle consists of the following steps ?
A. Two isothermal and two isentropic
B. Two isobaric and two isothermal
C. Two isochoric and two isobaric
D. Two isothermals and two isochoric - The main feature of Carnot refrigeration cycle is that, it________________________?
A. Does not need the addition of external work for its functioning
B. Transfers heat from high temperature to low temperature
C. Accomplishes the reverse effect of the heat engine
D. None of these
