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A certain electric motor produced 15 kJ ...

A certain electric motor produced 15 kJ of energy each second as mechanical work and lost 2 kJ as heat to the surroundings. What is the change in the internal energy of the motor and its power supply each second ?

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The correct Answer is:
17 KJ
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MOTION-CLASSROOM PROBLEMS 1-THERMODYNAMICS
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  2. The internal energy change in the conversion of 1.0 mole of the calcit...

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  5. Water is boiled under a pressure of 1.0 atm. When an electric current ...

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  6. An aeroplane weighing 63,000 kg flies up from sea level to a height of...

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  7. What is the temperature at which average K.E. of an ideal gas molecule...

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  8. For a reaction at 25^(@)C enthalpy change (DeltaH) and entropy change ...

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  9. Calculate the entropy change when 1 kg of water is heated from 27^(@)C...

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  10. Derive a relation showing reversible work of expansion from volume V(1...

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  11. Find out the work done in the given graph. Also draw the corresponding...

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  12. T-V curve of cyclic process is shown below, number of moles of the gas...

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  13. P-T curve of a cyclic process is shown. Find out the works done by the...

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  14. 1gm water at 100^(@)C is heated to convert into steam at 100^(@)C at 1...

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  15. From the equation ((delU)/(delV))(T)=T((delP)/(delT))(V)-P . Prove tha...

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  16. A sample of an ideal gas is taken through the cyclic process abca . It...

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  17. A sample of an ideal gas has pressure p(0), volume V(0) and tempreture...

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