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1131 questions found
An electric motor produces a force of 5 N at a distance of 0.2m from the centre of rotation and rotates at a speed of 100 revs/sec. The motors output is
- 100 horsepower.
- 628.4 watts.
- 314.2 watts.
arifadli8 asking:
How??
In an inductive resistive circuit, 1 amp flows from a supply of 100V dissipating 50 Watts of power. The phase angle is
- 60degrees.
- 90degrees.
- 45degrees.
arifadli8 asking:
Please teach me...
In the circuit shown, if the frequency is increased from zero to resonant frequency, the circuit current would
- increase.
- decrease.
- stay the same.
arifadli8 asking:
please explain...
Which of the following statements describes centrifugal force?
- Smaller than centripetal force and acts in the same direction.
- Greater than centripetal force and acts in the same direction.
- Equal to centripetal force and acts in the opposite direction.
Max_Bellamy asking:
Can anyone explain this? Thanks..
In a heat pump
- the compressor loses heat.
- the condenser loses heat.
- the evaporator loses heat.
Max_Bellamy asking:
Can anyone explain this? I always feel that heat pumps always gain heat during heating