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Test: Belt Constructions - Mechanical Engineering MCQ


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15 Questions MCQ Test Design of Machine Elements - Test: Belt Constructions

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

The layer of a belt is generally called as

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Explanation: Terminology.

Test: Belt Constructions - Question 2

Velocity ratio for chain drive is lesser than that for belts.

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Explanation: Velocity ratio for chain drives is about 15:1 while for belts it is around 7:1.

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Test: Belt Constructions - Question 3

Fabric rubber belts are not widely used as they can’t be operated at high speeds.

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Explanation: These belts can be operated at 300m/s.

Test: Belt Constructions - Question 4

Power transmitting capacity of V belts is more than that of flat belt.

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Explanation: Coefficient of friction is 2.92times of flat belts in V belts for identical materials.

Test: Belt Constructions - Question 5

The optimum velocity of the belt for maximum transmission is given by √P/6m.

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Explanation: It is given by √P/3m.

Test: Belt Constructions - Question 6

Creep is the slight absolute motion of the belt as it passes over the pulley.

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Explanation: It is a relative and not absolute motion.

Test: Belt Constructions - Question 7

 In horizontal belt, the loose side is generally kept on the bottom.

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Explanation: Loose side is kept on the top so that arc of contact increases and hence efficiency of the drive increases.

Test: Belt Constructions - Question 8

 Vertical drives are preferred over horizontal.

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Explanation: In vertical drive, gravitational force on the belt causes slip which reduces the efficiency.

Test: Belt Constructions - Question 9

The law of belting states that the centreline of the belt when it approaches a pulley must not lie in the midplane of the pulley.

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Explanation: The centreline must lie in the midplane.

Test: Belt Constructions - Question 10

 It is possible to use the belting reverse direction without violating the law of belting.

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Explanation: Law of belting is violated if belt is used in reverse direction.

Test: Belt Constructions - Question 11

A shorter centre distance is always preferred in belt drives.

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Explanation: It is more stable and compact.

Test: Belt Constructions - Question 12

If velocity ratio is less than 3, then centre distance is given by D+.5d.

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Explanation: It is given by D+1.5d.

Test: Belt Constructions - Question 13

If velocity ratio is more than 3, then centre distance is given by 2D.

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Explanation: It is given by D

Test: Belt Constructions - Question 14

 Is it possible to reduce the centre distance as much as we want?

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Explanation: It depends on physical dimension and the minimum angle of wrap required to transfer the required power.

Test: Belt Constructions - Question 15

The diameter of the shorter pulley in leather belt drive is 265mm. It is rotating at 1440 rpm. Calculate the velocity of the belt.

Detailed Solution for Test: Belt Constructions - Question 15

Explanation: v=πdn/60×1000.

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