For the successful operation of Heat engine which condition should be met ?

Related Mcqs:

1. The area enclosed by the curve ABCDA for a Carnot heat engine represents the work done by Carnot engine_______________?

   A. at any instant
   B. averagely
   C. during its operation
   D. during one cycle

2. The value of the steady current which when flowing through the same resistor produces heat at the same rate as the mean rate of heat produced by the alternating current is__________________?

   A. Average current
   B. Sinusoidal current
   C. r.m.s current
   D. Net current

3. Petrol engine is a________________?

   A. C.I engine
   B. SI engine
   C. IC engine
   D. all the above

4. Standard condition STP refer to a gas at ___________________?

   A. 76cm 0°C
   B. 760mm 273K
   C. 1atm 273K
   D. all of the above

5. The efficiency of the Carnot engine working between 150°C and 50°C is__________?

   A. 50%
   B. 100%
   C. 23.6%
   D. 29.4%

   Submitted by: Shuaib Uddin

6. The operation of a transistor requires______________?

   A. That the emitter be heated
   B. That the base be heated
   C. That the collector be heated
   D. None of the above

7. We can produce heat by________________?

   A. Frictional process
   B. Chemical processes
   C. Electrical processes
   D. All of the above

8. In which process all the heat supplied is converted into work done ?

   A. isothermal
   B. isochoric
   C. isobaric
   D. isentropic

9. Which one of the following has the highest value of specific heat?

   A. Water
   B. Alcohol
   C. Methane
   D. Kerosene

   Submitted by: Naveed Tahir

10. The process in which no heat enters or leave the system known as _____________?

    A. Isochoric
    B. Isobaric
    C. adiabatic
    D. Isothermal

    Submitted by: Aneela shabbir