Half Wave Rectifier

Q.

What would happen if a transformer is connected to a DC supply?

Q. A p-n junction (D) shown in the figure can act as a rectifier. An alternating current source (V) is connected in the circuit. The current (I) in the resistor (R) can be shown by

1. a
2. b
3. c
4. d

Q.

What are the different uses of transistors?

Q. A modem-

1. Translates along Signals from a computer into digital Signals that can travel along conventional telephone lines
2. Translates digital Signals from a computer into analog Signals that can travel along conventional telephone lines
3. None of these
4. Demodulates digital Signals from a computer.

Q.

How do you read a transistor?

Q.

Which transistor is used in amplifier?

Q.

A pn junction (D) shown in the figure can act as a rectifier. An alternating current source (V) is connected in the circuit.

The current (I) in the resistor R can be shown by

1. 

2. 

3. 

4. 

Q. In the half wave rectifier circuit operating from 50 Hz mains frequency, the fundamental frequency in the ripple would be

1. 25 Hz
2. 50 Hz
3. 70.7 Hz
4. 100 Hz

Q. The average value of output direct current in a half wave rectifier is

1. $\frac{I_0}{\pi }$
2. $\frac{\pi I_0}{2}$
3. $\frac{I_0}{2}$
4. $\frac{2I_0}{\pi }$

Q.

1. 

2. 

3. 

4. 

Q.

The PN junction diode is used as

1. An amplifier

2. A rectifier

3. An oscillator

4. A modulator

Q.

A sinusoidal voltage of peak value 200 volt is connected to a diode and resistor R in the circuit shown so that half wave rectification occurs. If the forward resistance of the diode is negligible compared to R the rms voltage (in volt) across R is approximately

1. 100

2. $\frac{200}{\surd 2}$

3. 280

4. 200