19) The special gear of 127 teeth or 63 teeth may be used to cut metric threads in a lathe having British lead screw. It is known as

Idler gear

Change gear

Translating gear

Compound gear

Answer is:

Translating gear

It is detachable part of the spindle

It is an integral part of the spindle

It is an integral part of the apron

It is detachable part of the apron

Answer is:

Engages / disengages the power feed

Changes the direction of rotation of the workpiece

Changes the feed direction

Engages / disengages the lead screw

Answer is:

Metric taper

Morse taper

Jarno taper

Brown and sharpe taper

Answer is:

allowing dismantling of the top slide easily

eliminate the backlash of the screw and the nut in the assembly

adjust the slackness developed due to wear

permit flow of the lubricant between the sliding surfaces

Answer is: