Machine Design MCQs with answers Page - 14

Here, you will find a collection of MCQ questions on Machine Design. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. A rack is a gear

  • (A) With infinite diametral pitch
  • (B) With infinite pitch circle diameter
  • (C) With infinite module
  • (D) With infinite number of teeth

A

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Q. Expansion joints are provided on pipes carrying

  • (A) Viscous fluids
  • (B) Water
  • (C) Air at pressures below atmospheric pressure
  • (D) Steam

A

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Q. The advantage of needle roller bearing over ball bearing is

  • (A) Less friction
  • (B) Less area requirement
  • (C) Smooth operation
  • (D) Large ratio of load capacity to size

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Q. A V-belt designated as C 120 will have

  • (A) 120 mm as the dia of small pulley
  • (B) 120 cm as the length of belt
  • (C) 120 inch as the length of belt
  • (D) 120 cm as the centre distance between pulleys

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Q. Dielectric strength of a material is

  • (A) Capacity to withstand high voltage
  • (B) Capacity to resist flow of current
  • (C) Capacity to take variable stresses
  • (D) Energy storage capacity

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Q. According to IS 800, the lacing bars should resist a transverse shear equal to

  • (A) 7.50%
  • (B) 2.50%
  • (C) Increasing the diameter of threaded portion
  • (D) 17.50%

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Q. The bunkers are the containers in which the plan of rupture intersects

  • (A) the opposite face (wall) near the bottom
  • (B) Increasing the diameter of threaded portion
  • (C) the opposite face (wall) near the top
  • (D) the top surface of material stored

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Q. Laser treatment of components increases fatigue resistance of metals by

  • (A) compressing holes
  • (B) filling vacancies
  • (C) freezing discontinuities
  • (D) none of the above

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Q. Failure of rolling bearings occurs mainly due to

  • (A) lubrication failure
  • (B) fatigue
  • (C) load and deformation
  • (D) Increasing the diameter of threaded portion

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Q. In elevated circular steel tanks, conical bottoms are attached when

  • (A) Increasing the diameter of threaded portion
  • (B) water is alkaline
  • (C) water is oily
  • (D) water is muddy

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