Engineering Materials – Section 1

1. Specify the sequence correctly A. Grain growth, recrystallisation, stress relief B. Stress relief, grain growth, recrystallisation C. Stress relief, recrystallisation, grain growth D. Grain growth, stress relief, recrystallisation Answer: Option C 2. Thermoplastic materials are those materials which A. are formed into shape under heat and pressure and results …

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Machine Design – Section 5

1. Which of the following property is desirable in parts subjected to shock and impact loads? A. Strength B. Stiffness C. Brittleness D. Toughness Answer: Option D 2. In block brakes, the ratio of shoe width to wheel diameter is taken between A. 0.1 and 0.25 B. 0.25 and 0.50 …

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Machine Design – Section 4

1. The major diameter of a screw thread is also known as core or root diameter. A. Yes B. No Answer: Option B 2. The initial tension (in newtons) in a bolt used for making a fluid tight joint like steam engine cover joints, is calculated by the relation (where …

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Machine Design – Section 3

1. If a bearing is designated by the number 305, it means that the bearing is of A. light series whose bore is 5 mm B. light series whose bore is 25 mm C. medium series whose bore is 5 mm D. medium series whose bore is 25 mm Answer: …

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Machine Design – Section 2

1. The rolling contact bearings are known as A. thick lubricated bearings B. plastic bearings C. thin lubricated bearings D. antifriction bearings Answer: Option D 2. The backlash for spur gears depends upon A. module B. pitch line velocity C. tooth profile D. both (a) and (b) Answer: Option D …

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Machine Design – Section 1

1. The sleeve or muff coupling is designed as a A. dun cylinder B. thick cylinder C. solid shaft D. hollow shaft Answer: Option D 2. A sliding bearing in which the working surfaces are completely separated from each other by lubricant is called zero film bearing. A. True B. …

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Steam Boilers and Engines – Section 4

1. The high pressure and low pressure cylinders in a Woolf type compound engine are regarded as having cranks The high pressure and low pressure cylinders in a Woolf type compound engine are regarded as having cranks A. 180° to each other B. 90° to each other C. 0° to …

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Steam Boilers and Engines – Section 3

1. For the same diameter and thickness of tube, a water tube boiler has __________ heating surface as compared to fire tube boiler. A. more B. less C. equal Answer: Option A 2. Throttle governing of steam engines is a method of controlling the engine output by varying A. volume …

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Steam Boilers and Engines – Section 2

1. A compound steam engine in which the high pressure and low pressure cylinders have common piston rod, is called A. receiver type compound engine B. Tandem type compound engine C. Woolf type compound engine D. none of these Answer: Option B 2. An economiser is used to increase the …

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Steam Boilers and Engines – Section 1

1. The object of producing draught in a boiler is A. to provide an adequate supply of air for the fuel combustion B. to exhaust the gases of combustion from the combustion chamber C. to discharge the gases of combustion to the atmosphere through the chimney D. all of the …

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