In a Carnot engine, when the working substance gives heat to the sink

Related MCQs

• A heat engine works on a Carnot cycle with a heat sink at a temperature of 27?C. The efficiency of the engine is 10%, the temperature of the heat source is
• Other factors remaining constant, if the temperature of sink is increased, the efficiency of the Carnot engine will
• If the temperature of the sink is decreased, the efficiency of a Carnot engine
• Three Carnot engines A, B and C having source temperature of 750?K, 700?K and 650?K have sink temperatures respectively 400?k, 350?k and 300?k. Which engine is the least efficient?
• The efficiency of a Carnot engine is given as 0.75. If the cycle direction is reversed, what will be the value of COP of reversed Carnot cycle
• The perfect heat engine works on the Carnot cycle between 1000?C and 200?C. The efficiency of the engine will be
• Three engines A, B and C operating on Carnot cycle use working substances as oxygen, hydrogen and air. Which engine will have higher efficiency?
• If a heat engine gives an output of 3 kW and input is 10,000 J/s the thermal efficiency of the engine will be
• "Heat can flow from cold substance to hot substance with the aid of external work". Which of the following name is associated with the above statement?
• "Heat flows from hot substance to cold substance unaided". The name associated with the above statement is