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GATE 2019: Machine Design Quiz 7

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Question 1

Which of the following machine element is does not transmit power between the source and the machine absorbing the power.

Question 2

The key can have two wedge shaped pieces or a single rectangular or square piece-

Question 3

A pulley of radius 500 mm is keyed to 25 mm radius of shaft by a 14 mm square key of length 150 mm. The tension in the tight side of the belt is 5000 N and tension ratio is 2 : 1. If ultimate shear strength is 250 MPa, then what will be the factor of safety in shear for key ?

Question 4

The difference between tensions on the tight and slack sides of a belt drive is 8000 N. If the belt speed is 80 m/s, the transmitted power in kW is

Question 5

Friction material used in the breaking system should have posses the following properties and common friction material are

Question 6

Which of the following is true for the cotter joint?
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Jun 3ESE & GATE ME