| 1. | If the critical pressure ratio for steam is 0.546, then the steam is initially ? | |
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wet steam
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dry saturated steam
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superheated steam
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none of these
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Report Question| 2. | A compound steam engine in which piston rods of high pressure and low pressure cylinders are attached to two different cranks set at 90° to each other, is called ? | |
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receiver type compound engine
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Tandem type compound engine
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Woolf type compound engine
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both (a) and (b)
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| 3. | The device attached to the steam chest for preventing explosions due to excessive internal pressure of steam is called ? | |
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safety valve
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water level indicator
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pressure gauge
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fusible plug
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| 4. | A single acting steam engine produces ........ power than that of double acting steam engine ? | |
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equal
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half
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double
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four times
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| 5. | Throttle governing of steam engines is a method of controlling the engine output by varying ? | |
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volume of intake steam
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pressure of intake steam
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temperature of intake steam
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all of these
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| 6. | Which of the following boiler is best suited to meet the fluctuating demand of steam ? | |
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Locomotive boiler
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Lancashire boiler
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Cornish boiler
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Babcock and Wilcox boiler
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| 7. | The cylindrical shell of a Lancashire boiler has diameter from ? | |
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1 to 2 m
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1.25 to 2.25 m
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1.5 to 2.5 m
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1.75 to 2.75 m
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| 8. | When the speed of the engine is controlled by means of a valve in a steam pipe, which regulates the pressure of steam entering the engine, then the governing is known as ? | |
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throttle governing
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cut-off governing
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by-pass governing
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none of these
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| 9. | The fire tubes in a Locomotive boiler has ................. diameter ? | |
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4.75mm
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5.47mm
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7.45mm
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47.5mm
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| 10. | A compound steam engine in which the high pressure and low pressure cylinders have common piston rod, is called ? | |
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receiver type compound engine
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Tandem type compound engine
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Woolf type compound engine
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one of these
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