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


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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