Gears and Belt Drives Flashcards
7 cards from real Bennett Mechanical Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Gears and Belt Drives flashcards as text
A gear with 60 teeth drives a gear with 20 teeth. The driven gear turns how many times per driver revolution?
Answer: 3 times
60 divided by 20 equals 3, so the small gear turns three times.
Bevel gears are used primarily to transmit motion between shafts that are:
Answer: At an angle to each other
Bevel gears transmit power between intersecting, angled shafts.
A worm gear arrangement is known for providing:
Answer: High speed reduction
Worm gears deliver large speed reductions in a compact space.
In a belt drive, if the belt is too loose, the most likely result is:
Answer: Slipping and lost power
A loose belt slips on the pulleys and fails to transfer full power.
A 5 cm diameter pulley drives a 15 cm diameter pulley. The speed ratio of driver to driven is:
Answer: 3:1
The driver turns three times for each turn of the larger pulley, giving 3:1.
Which gear type has teeth cut at an angle, allowing quieter and smoother operation than straight-cut gears?
Answer: Helical gears
Helical gears engage gradually due to angled teeth, reducing noise.
A rack and pinion converts rotational motion into:
Answer: Linear motion
The pinion gear drives the straight rack to produce linear movement.