Efficiency of a Carnot engine is given as 80%. If the- cycle direction be reversed, what will be the value of COP of reversed Carnot cycle_________________?

Related Mcqs:

The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases ____________________ ?

A. will be higher B. will be lower C. will remain unaffected D. may be higher or lower depending upon the nature of non-condensable gases E. unpredictable...

For better COP of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be____________________?

A. small B. high C. euqal D. anything E. under some conditions small and under some conditions high...

If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of – 23°C, then the Carnot COP will be_________________?

A. 0.2 B. 1.2 C. 5 D. 6 E. 10...

The coefficient of performance is the ratio of the refrigerant effect to the_________________?

A. heat of compression B. work done by compressor C. enthalpy increase in compressor D. all of the above E. none of the above...

At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant_________________?

A. decreases B. increases C. remains same D. depends on other factors E. none of the above...