| 1. | The maximum heat content at 100°C in cal/ms is possessed by the following gas ? | |
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CH4
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S0?
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0?
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C0?
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Report Question| 2. | The ratio of the specific heat at constant pressure to specific heat at constant volume for air is equal to ? | |
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1.4
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0.14
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14
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140
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| 3. | Heat pump is a device which ? | |
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convert mechanical energy into heat energy
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convert heat energy into mechanical energy
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delivers the heat flow low temperature to a high temperature in a cyclic process
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delivers the heat from high temperature to a low temperature in a cyclic process
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| 4. | Total heat supplied at constant volume is ? | |
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Q = m x Cp x (T2-T1)
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Q= m x R x (T2-T1)
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Q = m Cv x (T2+T1)
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Q = m Cv x (T2 - 11 )
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| 5. | The efficiency of the diesel cycle increases ? | |
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with increase in cut-off ratio
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with decrease in cut-off ratio
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remains unaffected
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unpredictable
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| 6. | The volumetric analysis of dry products of combustion ? | |
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bomb calorimeter
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viscosity meter
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orsat apparatus
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calorimeter
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| 7. | A carnot engine rejects 30% of absorbed heat at a sink at 30°C. The temperature of the heat source is ? | |
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100°C
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433°C
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737°C
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101 °C
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| 8. | Which one of the following phenomena occurs when gas in a piston-in-cylinder assembly expands reversibly at constant pressure ? | |
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Heat is added to the gas
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Heat is removed from the gas
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Gas does work from its own stored energy
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Gas undergoes adiabatic expansion
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| 9. | A Carnot heat pump works between temperature limits of 277°C and 27°C. Its COP is ? | |
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1.108
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1.2
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2.2
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9.26
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| 10. | For an open channel at critical depth the flow becomes ? | |
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Constant
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Zero
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Half
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Maximum
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