A Carnot cycle consists of the following steps ?

Related Mcqs:

1. 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

2. The shape of T-S diagram for Carnot Cycle is a__________________?

   A. Rectangle
   B. Rhombus
   C. Trapezoid
   D. Circle

3. Efficiency of a heat engine working on Carnot cycle between two temperature levels depends upon the__________________?

   A. Two temperatures only
   B. Pressure of working fluid
   C. Mass of the working fluid
   D. Mass and pressure both of the working fluid

4. 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

5. 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

6. 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

7. A refrigeration cycle is the same as a _____________ cycle?

   A. Turbine
   B. Heat engine
   C. Reversed heat engine
   D. None of these

8. An ideal gas is taken around the cycle ABCA as shown in P-V diagram below: The work done by the gas during the cycle is equal to_________________?

   A. 12 P1V1
   B. 6 P1 V1
   C. 3 P1V1
   D. P1 V1

9. 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

10. 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