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“Design Engineer related Frequently Asked Questions by expert members with experience in Designing Engineer. These questions and answers will help you strengthen your technical skills, prepare for the new job test and quickly revise the concepts”

69 Design Engineer Questions And Answers

21⟩ The velocity of sliding __________ the distance of the point of contact from the pitch point. A. is directly proportional to B. is inversely proportional to C. is equal to cos φ multiplied by D. does not depend upon

Option A

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22⟩ A locking device in which the bottom cylindrical portion is recessed to receive the tip of the locking set screw, is called A. castle nut B. jam nut C. ring nut D. sawn nut

Option C

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23⟩ The application of third type levers is found in A. handle of a hand pump B. hand wheel of a punching press C. lever of a loaded safety valve D. a pair of tongs

Option D

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24⟩ A crankshaft is a __________ shaft. A. transmission B. machine

Option B

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25⟩ According to Indian standard specifications, 100 H6/g5 means that the A. actual size is 100 mm B. basic size is 100 mm C. difference between the actual size and basic size is 100 mm D. none of the above

Option B

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26⟩ When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the A. head B. shank C. thread D. middle

Option C

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27⟩ Stress concentration is caused due to A. variations in load acting on a member B. variations in properties of materials in a member C. abrupt change of cross-section D. all of these

Option C

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28⟩ In leaf springs, the longest leaf is known as A. lower leaf B. master leaf C. upper leaf D. none of these

Option B

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29⟩ Surface endurance limit of gear material is dependent upon its A. elastic strength B. yield strength C. brinell hardness number D. toughness

Option C

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30⟩ The toughness of a material __________ when it is heated. A. increases B. decreases C. does not change

Option B

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31⟩ In a flange coupling, the flanges are coupled together by means of A. bolts and nuts B. studs C. headless taper bolts D. none of these

Option A

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32⟩ In a hydrodynamic lubricated bearing A. there is a thick film of lubricant between the journal and the bearing B. there is a thin film of lubricant between the journal and the bearing C. there is no lubricant between the journal and the bearing D. the lubricant is forced between the journal and the bearing, by external pressure

Option A

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33⟩ In radial cams, the follower moves A. in a direction perpendicular to the cam axis B. in a direction parallel to the cam axis C. in any direction irrespective of cam axis D. along the cam axis

Option A

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34⟩ The taper on cotter varies from A. 1 in l5 to 1 in 10 B. 1 in 24 to 1 in 20 C. 1 in 32 to 1 in 24 D. 1 in 48 to 1 in 24

Option D

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35⟩ When a load W is suddenly applied to a bar of weight W1, the stress induced in the bar will increase with the increase in weight W1. A. Correct B. Incorrect

Option B

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36⟩ Which of the following statement is correct? A. The toughness of a material increases when it is heated. B. The shear stress in a beam varies from zero at the neutral surface and maximum at the outer fibres. C. The stress concentration in static loading is more serious in brittle materials and less serious in ductile materials. D. The stress concentration in static loading is more serious in ductile materials and less serious in brittle materials.

Option C

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37⟩ The rolling contact bearings are known as A. thick lubricated bearings B. plastic bearings C. thin lubricated bearings D. antifriction bearings

Option D

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38⟩ Which of the following material has the maximum ductility? A. Mild steel B. Copper C. Zinc D. Aluminium

Option A

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39⟩ For unequal width of butt straps, the thickness of butt straps are A. 0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside B. 0.75 t for narrow strap on the inside and 0.625 t for wide strap on the outside C. 0.75 t for both the straps on the inside and outside D. 0.625 t for both the straps on the inside and outside

Option A

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40⟩ The number of slots in a 25 mm castle nut is A. 2 B. 4 C. 6 D. 8

Option C

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