In helical gears, the distance between similar faces of adjacent teeth along a helix on the pitch cylinders normal to teeth is called . . . . . . . . pitch.

Hard shifting of gears is due to

A. Leakage of oil from gear box

B. Worn out splines on the main shaft

C. High speed

D. Over loading

In which among the following gearing, the greater ratio may be implied?

A. Bevel gearing

B. Spur gearing

C. Helical gearing

D. Worm gearing

The type of commercial vehicle which connects tractor to the trailer by a fifth wheel coupling is called

A. 6 × 5

B. 8 × 5

C. Rigid

D. Articulated

Which of the following is used to implement gear changes in the gear unit of an automatic transmission?

A. Synchronizer

B. Planetary gear

C. Magnetic clutch

D. Hydraulic multi plate clutch