NEETPhysicsHeat and ThermodynamicsMCQ+4 / −1
A Carnot engine whose sink is at 300 K has an efficiency of 40%. By how much should the temperature of source be increased so as to increase its efficiency by 50% of original efficiency ?
- A380 K
- B275 K
- C325 K
- D250 K
More from Heat and Thermodynamics
- The molar specific heat at constant pressure of an ideal gas is (7/2) R. The ratio of specific heat at constant pressure to that at constant volume is2006 · MCQ
- An ideal gas heat engine operates in Carnot cycle between 227oC and 127oC. It absorbs 6 104 cal of heat at higher temperature. Amount of heat converted to work is2005 · MCQ
- Which of the following processes is reversible?2005 · MCQ
- The equation of state for 5 g of oxygen at a pressure P and temperature T, when occupying a volume V, will be (where R is the gas constant)2004 · MCQ
- One mole of an ideal gas at an initial temperature of T K does 6R joule of work adiabatically. If the ratio of specific heats of this gas at constant pressure and at constant volume is 5/3, the final temperature of gas will be2004 · MCQ
- An ideal gas heat engine operates in a Carnot cycle between 227oC and 127oC. It absorbs 6 kcal at the height temperature. The amount of heat (in kcal) converted into work is equal to2003 · MCQ
- The efficiency of Carnot engine is 50% and temperature of sink is 500 K. If temperature of source is kept constant and its efficiency raised to 60%, then the required temperature of sink will be2002 · MCQ
- A scientist says that the efficiency of his heat engine which work at source temperature 127oC and sink temperature 27oC is 26%, then2001 · MCQ