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# Electrical Engineering - Alternating Current and Voltage

### Exercise

"Everyone is wise until he speaks."
- (Proverb)
1.

If the rms voltage drop across a 15 k resistor is 16 V, the peak current through the resistor is

 A. 15 mA B. 1.5 mA C. 10 mA D. 1 mA

2.

The conductive loop on the rotor of a simple two-pole, single-phase generator rotates at a rate of 400 rps. The frequency of the induced output voltage is

 A. 40 Hz B. 100 Hz C. 400 Hz D. indeterminable

3.

How many degrees are there in /3 rad?

 A. 6° B. 60° C. 180° D. 27°

4.

To produce an 800 Hz sine wave, a four-pole generator must be operated at

 A. 200 rps B. 400 rps C. 800 rps D. 1,600 rps

5.

One sine wave has a positive-going zero crossing at 15° and another sine wave has a positive-going zero crossing at 55°. The phase angle between the two waveforms is

 A. 0° B. 45° C. 40° D. none of the above