Question 81 : Cut-off governing of steam engines is a method of controlling the engine output by varying
1. volume of intake steam
2. pressure of intake steam
3. temperature of intake steam
4. all of the mentioned
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Question 82 : In a water-tube boiler, water flows through?
1. drum
2. shell
3. tube
4. none of the mentioned
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Question 83 : Which of the following statement is correct?
1. A simple vertical boiler has one fire tube
2. Steam at a high pressure and in large quantities can be produced with a simple vertical boiler
3. A fire tube boiler occupies less space than a water tube boiler, for a given power
4. All of the mentioned
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Question 84 : Which of these is not a type of steam generator depending upon the kind of applications?
1. utility steam generators
2. marine steam generators
3. agricultural steam generators
4. industrial steam generators
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Question 85 : The diameter of a cylindrical shell of a Scotch marine boiler varies from
1. 3.5 to 4.5m
2. 1.5 to 2m
3. 2.5 to 3.5m
4. none of the mentioned
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Question 86 : Which of the following boiler is best suited to meet the fluctuating demand of steam?
1. Cornish boiler
2. Lancashire boiler
3. Locomotive boiler
4. Babcock & Wilcox boiler
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Question 87 : A safety valve mainly used with locomotive and marine boilers is
1. lever safety valve
2. dead weight safety valve
3. spring loaded safety valve
4. high steam and low water safety valve
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Question 88 : The chimney draught varies with?
1. climatic conditions
2. temperature of furnace gases
3. height of chimney
4. all of the mentioned
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Question 89 : A device used to increase the temperature of saturated steam without raising its pressure, is called
1. fusible plug
2. blow off cork
3. super heater
4. stop valve
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Question 90 : Fire tube boilers are
1. internally fired
2. externally fired
3. both internally as well as externally fired
4. none of the mentioned
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