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Test: Keys - Mechanical Engineering MCQ


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10 Questions MCQ Test - Test: Keys

Test: Keys for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Test: Keys questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Keys MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Keys below.
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Test: Keys - Question 1

 A force 2P is acting on the double transverse fillet weld. Leg of weld is h and length l. Determine the shear stress in a plane inclined at θ with horizontal.

Detailed Solution for Test: Keys - Question 1

Explanation: F=PSinθ and width=h/(Sinθ+Cosθ).

Test: Keys - Question 2

Maximum shear stress in transverse fillet weld of leg h and length l is

Detailed Solution for Test: Keys - Question 2

Explanation: τ= PSinθ(Sinθ+Cosθ)/hl, by maximising it θ=67.5’ and hence find corresponding τ.

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Test: Keys - Question 3

A sunk key fits in the keyway of the _____ only.

Detailed Solution for Test: Keys - Question 3

Explanation: Sunk key fits halfway in the hub and halfway in the shaft.

Test: Keys - Question 4

Hollow saddle key is superior to flat saddle key as far as power transmitting capability is concerned.

Detailed Solution for Test: Keys - Question 4

Explanation: The resistance to slip in case of flat key is more.

Test: Keys - Question 5

 Saddle key is more suitable than sunk key for heavy duty applications.

Detailed Solution for Test: Keys - Question 5

Explanation: In sunk key, relative motion is also prevented by shear resistance of sunk key and hence sunk key is recommended.

Test: Keys - Question 6

The main advantage of sunk key is that it is a _____ drive.

Detailed Solution for Test: Keys - Question 6

Explanation: Sunk key is a positive drive and no slip occurs.

Test: Keys - Question 7

Woodruff key permits _____ movement b/w shaft and the hub.

Detailed Solution for Test: Keys - Question 7

Explanation: Woodruff key is a sunk key and doesn’t permit axial moment.

Test: Keys - Question 8

Determine the length of kennedy key required to transmit 1200N-m and allowable shear in the key is 40N/mm². The diameter of shaft and width of key can be taken as 40mm and 10mm respectively.

Detailed Solution for Test: Keys - Question 8

Explanation: l=M/[dbτ√2].

Test: Keys - Question 9

 Splines are keys.

Detailed Solution for Test: Keys - Question 9

Explanation: Splines are keys made with shafts.

Test: Keys - Question 10

Involute splines have stub teeth with a pressure angle of ___

Detailed Solution for Test: Keys - Question 10

Explannation: Pressure angle is 30’ and not 60’.

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