GATE Mechanical Engineering Notes Pdf - 1
Question: 1
Steel balls for ball bearings are manufactured by
(A) cold heating
(B) casting
(C) turning
(D) rolling
Ans: A
cold heating
Question: 2
For most of the lubricating oils, as temperature increases, viscosity decreases nearly
(A) exponentially
(B) hyperbolically
(C) parabolically
(D) linearly
Ans: D
linearly
Question: 3
Which type of gear will be used for non parallel and non intersecting shafts
(A) helical gear
(B) spur gear
(C) bevel gear
(D) hypoid gear
Ans: D
hypoid gear
Question: 4
The basic hole is one which has
(A) lower as well as upper deviation are zero
(B) lower as well as upper deviation within narrow limits
(C) lower deviation as zero
(D) upper deviation as zero
Ans: C
lower deviation as zero
Question: 5
The crest diameter of a screw thread is same as
(A) major diameter
(B) minor diameter
(C) core diameter
(D) pitch diameter
Ans: A
major diameter
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