Bennett Mechanical Test Gears and Belt Drives 3

Question 1

A gear with 60 teeth drives a gear with 20 teeth. The driven gear turns how many times per driver revolution?

Accepted Answer

3 times

Answer

60 divided by 20 equals 3, so the small gear turns three times.

Question 2

Bevel gears are used primarily to transmit motion between shafts that are:

Accepted Answer

At an angle to each other

Answer

Bevel gears transmit power between intersecting, angled shafts.

Question 3

A worm gear arrangement is known for providing:

Accepted Answer

High speed reduction

Answer

Worm gears deliver large speed reductions in a compact space.

Question 4

In a belt drive, if the belt is too loose, the most likely result is:

Accepted Answer

Slipping and lost power

Answer

A loose belt slips on the pulleys and fails to transfer full power.

Question 5

A 5 cm diameter pulley drives a 15 cm diameter pulley. The speed ratio of driver to driven is:

Accepted Answer

3:1

Answer

The driver turns three times for each turn of the larger pulley, giving 3:1.

Bennett Mechanical Test Practice Test