1. Find out the value of I.
2. Find equivalent resistance between A-B in the
following circuit.
3. A 3 phase, 5hp, 220V Y-connected motor has an
efficiency of 85%. Determine power factor when it draws 15A current from line.
4.Draw the connection diagram for two wattmeter method
of measuring 3 phase power of an unbalanced system.
5. Write down the names of the methods of speed control
for DC shunt motors.
6. Draw typical open circuit characteristic(OCC) curves
of a DC shunt generators at two different rpm setting (n1
and n2,
n1>n2).
7. Assuming the diodes to be ideal, draw the output
voltage (V0) wave form for the circuit shown
below. The input voltage (Vi) is sinusoidal with a
magnitude of 20 (peak to peak) and a frequency of 100 Hz.
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