MECHANISM AND MACHINE MCQ ON GEAR

Q.1 Bevel gears have their teeth____.

A. Curved over the wheel rim

B. Cut on the surface of the frusta of cones

C. Inclined to wheel rim

D. Straight over the wheel rim

Ans-: B

Q.2 The product of circular pitch and diameteral pitch is equal to the _____.

A. Module

B. Unity

C. 1

D. π

Ans-: D

Q.3 A gear whose tooth traces are straight line generators of the cone is called ?

A. Hypoid gear

B. Straight bevel gear

C. Spiral bevel gear

D. None of the above

Ans-: B

Q.4 The tooth traces of the spiral bevel gear are _____.

A. Spiral

B. Straight

C. Curved

D. Zig-zag

Ans-: C

Q.5 Worm gears are generally used when the high speed reduction is required. What is the ratio ?

A. 5:1

B. 1:10

C. 2:5

D. 10:1

Ans-: D

Q.6 The sum of the arc of approach and the arc of recess is known as ___.

A. Arc of action

B. Arc of recess

C. Arc of approach

D. None of the above

Ans-: A

Q.7 The arc measured on pitch circle from the point of beginning of contact to the pitch point is called the ____.

A. Arc of action 

B. Arc of approach

C. Arc of recess

D. All of the above

Ans-: B

Q.8 The acute angle between the tangent to the helix and a plane perpendicular to axis of cylinder is ?

A. Helix angle

B. Base angle

C. Acute angle

D. Lead angle

Ans-: D

Q.9 The acute angle between the tangent to the helix and axis of the cylinder on which teeth are cut is called ?

A. Acute angle

B. Base angle

C. Lead angle

D. Helix angle

Ans-: D

Q.10 Which of the following is not the gear for non- parallel, non- intersecting shafts ?

A. Worm

B. Hypoid

C. Bevel

D. Helical

Ans-: C