Thermodynamic cycle involved in the working of a thermal power plant is the ______________ cycle ?

Related Mcqs:

1. Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of ______________ will facilitate the most accurate measurement of the temperature ?

   A. Copper
   B. Steel
   C. Aluminium
   D. Brass

2. A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.14 W/m.K and thickness ______________ metre?

   A. 0.01
   B. 0.1
   C. 0.25
   D. 0.5

3. Induced draft fans provided in large thermal power plant boilers have __________________ blades?

   A. Forward curved
   B. Backward curved
   C. Double curved
   D. Radial or straight

4. The most prominent single cause of corrosion in boiler-tubes, drums, economisers and steam superheaters in a thermal power plant boiler is the_______________?

   A. Water alkalinity & leakage
   B. Hydrazine addition during feed water treatment
   C. Release of non-condensable gas from water in the boiler
   D. Scale formation

5. Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity) ____________________?

   A. 1/k
   B. k
   C. k2
   D. 1/k2

6. The thermodynamic law, PVy = constant, is not followed by the __________________?

   A. Free expansion of an ideal gas
   B. Adiabatic expansion of steam in turbine
   C. Adiabatic compression of air
   D. Ideal compression of air

7. According to thermodynamic Fahrenheit scale, the fundamental interval between ice point to steam point is__________________?

   A. 180°
   B. 212°
   C. 32°
   D. 273°

8. For a thermodynamic system undergoing a process, which of the following pairs best expresses the relationship similar to that expressed by the pressure volume plot ?

   A. Temperature – entropy
   B. Temperature – pressure
   C. Enthalpy – entropy
   D. Enthalpy-pressure

9. When an isolated thermodynamic system executes a process ___________________?

   A. Work is done
   B. Heat transfer takes place
   C. Mass flow occurs across the boundary of the system
   D. No chemical reaction takes place within the system

10. Carnot cycle is also termed as the constant _________________ cycle in thermodynamics?

    A. Entropy
    B. Pressure
    C. Volume
    D. Heat