| 1. | In order that no shock wave develops when flow is taking place through a converging diverging tube, Mach number at exit should be ? | |
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equal to 1
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less than 1
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greater than 1
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not critical
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Report Question| 2. | Equivalent evaporation is the amount of water evaporated in a boiler from and at ? | |
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0 degree celcious
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100 degree celcius
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saturation temperature at given pressure
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room temperature
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| 3. | On Mollier chart, flow through turbine is represented by ? | |
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horizontal straight line
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vertical straight line
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straight inclined line
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curved line
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| 4. | The evaporation of 15.653 kg of water per hour from and at 100°C is called 100°C ? | |
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evaporative capacity
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factor of evaporation
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equivalent evaporation
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one boiler h.p.
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| 5. | Steam engine operates on ? | |
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carnot cycle
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joule cycle
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stirling cycle
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None of these
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| 6. | The number of drums in Benson steam generator is ? | |
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one
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two
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one steam drum and one water drum
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no drum
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| 7. | The pressure (in kg/cm^2) and temperature (in °C) at the end of compression stroke in a petrol engine are of the order of ? | |
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4 to 6 and 200 to 250
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6 to 12 and 250 to 300
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12 to 20 and 350 to 450
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20 to 30 and 450 to 500
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| 8. | A heat engine utilizes the ? | |
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calorific value of oil
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low heat value of oil
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high heat value of oil
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mean heat value of oil
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| 9. | The reason for supercharging in any engine is to ? | |
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increase efficiency
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increase power
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reduce weight and bulk for a given output
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effect fuel economy
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| 10. | The following volume (in m^3) of air is required for consuming 1 liter of fuel by a four stroke engine ? | |
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1
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2.5
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5 to 6
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9 to 10
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