EASY
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IMPORTANT
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A Carnot engine rejects heat at 27°C. If it's efficiency is 25% then it is taking heat from a source having temperature

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Important Questions on Heat and Thermodynamics

EASY
Physics
IMPORTANT
Physics Crash Course BITSAT>Chapter 9 - Heat and Thermodynamics>Exercise 1>Q 151
If a Carnot engine works between 127°C and 527°C, then its efficiency is
MEDIUM
Physics
IMPORTANT
Physics Crash Course BITSAT>Chapter 9 - Heat and Thermodynamics>Exercise 1>Q 152
If the temperature of sink is at absolute zero, then the efficiency of Carnot engine will be
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Physics
IMPORTANT
Physics Crash Course BITSAT>Chapter 9 - Heat and Thermodynamics>Exercise 1>Q 153
A Carnot engine whose sink is at 300 K has an efficiency of 50%. By how much should the temperature of source be increased so as the efficiency becomes 70% ?
MEDIUM
Physics
IMPORTANT
Physics Crash Course BITSAT>Chapter 9 - Heat and Thermodynamics>Exercise 1>Q 154
A Carnot engine takes 6000 cal of heat from a reservoir at 627°C and gives it to a sink at 27°C. The work done by the engine is
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Physics
IMPORTANT
Physics Crash Course BITSAT>Chapter 9 - Heat and Thermodynamics>Exercise 1>Q 155
A Carnot cycle consists of
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IMPORTANT
Physics Crash Course BITSAT>Chapter 9 - Heat and Thermodynamics>Exercise 1>Q 156
A Carnot engine is working in such a temperature of sink that its efficiency is maximum and never changes with any non-zero temperature of source. The temperature of sink will most likely to be
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Physics
IMPORTANT
Physics Crash Course BITSAT>Chapter 9 - Heat and Thermodynamics>Exercise 1>Q 157
A Carnot engine working between 300 K and 600 K has a work output of 800 J per cycle. The amount of heat energy supplied to the engine from the source in each cycle is
EASY
Physics
IMPORTANT
Physics Crash Course BITSAT>Chapter 9 - Heat and Thermodynamics>Exercise 1>Q 158
An ideal gas heat engine operates in Carnot cycle between 227° C and 127° C. It absorbs 6×104 cal  of heat at higher temperature. The amount of heat converted to work is___