multiple choice questions on gears and gear terminology

Q.1 The ratio of number of teeth and pitch circle diameter is called _____.

A. Diameteral pitch

B. Module

C. Pitch

D. Teeth diameter

Ans-: A

Q.2 The pitch circle diameter of an involute gear is dependent of the _____.

A. Base diameter 

B. Tooth thickness

C. Pressure angle

D. Addendum

Ans-: C

Q.3 Which of the following is not a type of gear ?

A. Helical

B. Spur

C. Circular

D. Bevel

Ans-: C

Q.4 Gears are used generally when the centre distances are relatively ____.

A. Short

B. Long

C. Variable

D. Zero

Ans-: A

Q.5 Which gear is a cylindrical whose tooth traces are straight helices i.e.,teeth are inclined at an angle to the gear axis.

A. Spur gear

B. Helical gear

C. Worn gear

D. Bevel gear

Ans-: B

Q.6 Which gear is a spur gear of infinite diameter?

A. pinion

B. Worn gear

C. Herringbone gear

D. Rack

Ans-: D

Q.7 Bevel gears are used to transmit _______ motion between the two shafts.

A. Circular

B. Straight

C. Rotary

D. Reciprocating

Ans-: C

Q.8 The pressure angle for involute gears is ?

A. Zero

B. Variable

C. Depend on size of teeth

D. always constant

Ans-: D

Q.9 If the peripheral velocity of gears lies between 3-15 m/sec then it is called ___.

A. High velocity gear

B. Low velocity gear

C. Medium velocity gear

D. None of the above

Ans-: C

Q.10 Pitch circle is always _____ than the base circle.

A. Bigger 

B. Smaller

C. Equal

D. Constant

Ans-: A