Q&A Forum
1131 questions found
A pinion gear with 16 teeth is driving a spur gear with 48 teeth at 120 RPM. Find the speed of the pinion gear.
- 40 RPM
- 144 RPM
- 360 RPM
Richiegeee asking:
quite embarrassed to ask, but can someone please explain the difference between pinion and spur gears?
In an equilateral triangle, all of the angles are equal, to
- pi divided by 2.
- pi divided by 3.
- pi divided by 4.
piesoup asking:
Please explain.
Pi / 3 = 1.047198.
Starting from zero amplitude, the cosine curve repeats itself between
- -180 and 180 degree.
- -90 and 270 degrees.
- 0 and 360 degree.
piesoup asking:
What is meant by 'repeats itself'?
Thanks
The propulsive efficiency is
- low, with a low mass flow acceleration.
- high, with a low mass flow acceleration.
- high, with a high mass flow acceleration.
ikkyu9 asking:
more mass flow is more thrust, is'nt it.?
How many turns does the secondary winding of a 2:1 step-up transformer have?
- Less than primary.
- More than primary.
- Less turns but with thicker wire.
alesaba asking:
è sbagliata?