Zener Diode as Voltage Stabilizer

Q. What is stopping potential
.pls describe with full details

Q. A wire of length $2L$, is made by joining two wires $A$ and $B$ of the same length, but different radii $r$ and $2r$ and made of the same material. It is vibrating at a frequency such that the joint of the two wires forms a node. If the number of antinodes in wire $A$ is $p$ and that in $B$ is $q$ then the ratio $p:q$ is

1. $4:9$
2. $3:5$
3. $1:4$
4. $1:2$

Q.

Draw Circuit Symbol of Zener Diode ?

Q. What is avalanche effect

Q. In the following circuit if $V_A-V_B=4\text{V}$, then the value of resistance $X$ in $\text{ohms}$ will be:

Q. A zener diode of power rating \(2~\text W\) is to be used as a voltage regulator. If the zener diode has a breakdown of \(10~\text V\) and it has to regulate voltage fluctuated between \(6~\text V\) and \(14~\text V, \) the value of \(R_{S}\) for safe operation should be ________\(\Omega .\)


Ry —AMW—T————o Unregulate Regulated voltage voltage o 

Q. Use Kirchhoff's rules to determine the potential difference between the points A and D when no current flows in the arm BE of the electric network shown in the figure.

Q.

Define Semiconductor Diode And Give Some Examples Of It.

Q.

How many types of diodes are there?

Q.

Zener diode is used for

1. amplification

2. rectification

3. stabilization

4. all of the above amplification

Q.

In the circuit shown, find the current through the Zener diode.

1. $5\mathrm{mA}$

2. $1\mathrm{mA}$

3. $15\mathrm{mA}$

4. $25\mathrm{mA}$

Q. Mark the correct options.
(a) A diode valve can be used as a rectifier.
(b) A triode valve can be used as a rectifier.
(c) A diode valve can be used as an amplifier.
(d) A triode valve can be used as an amplifier.

Q. 111.In the circuit shown, the key (K) is closed at t =0, the current through the key at the instant t =10-3 In 2, is (a) 2A (b) 8A (c) 4 A (d) zero

Q. 22.In the circuit shown, the symbols have their usual meanings. The cell has emf E. X is initially joined to Y for a long time. Then X is joined to Z. Find the maximum charge on C at any later time.

Q.

What is the difference between Diode and Zener Diode?

Q. What is the use of a Zener diode?

Q. Which of the following characteristics of electrons determines the current in a conductor?

1. Both drift velocity and thermal velocity
   
2. Thermal velocity alone
   
3. Drift velocity alone
   
4. Neither drift nor thermal velocity
   

Q. 122.Which of the following parameter in the series LCR circuit is analogous to driving force in mechanics? 1) V/L 2) voltage V

Q.

A zener diode, having breakdown voltage equal to $15V$, is used in a voltage regulator circuit shown in figure.

The current through the diode( in $mA$) is

Q. In the given circuit, the current through zener diode is:

1. $2.5mA$
2. $3.3mA$
3. $6.7mA$
4. $5.5mA$

Q. The I-V characteristic curve of an LED is

1. 
2. 
3. 
4. 

Q. A Zener diode when used as a voltage regulator, is connected
(a) in forward bias.
(b) in reverse bias.
(c) in parallel to the load.
(d) in series to the load.

1. (b) and (c) are correct
2. (a) and (b) are correct
3. (a) only is correct
4. (d) only is correct

Q. A Zener diode, having breakdown voltage equal to $15V$ is used in a voltage regulator circuit shown in figure. The current through the diode is

1. $10mA$
2. $15mA$
3. $20mA$
4. $5mA$

Q. Draw the circuit diagram of a voltage regulator using zener diode.

Q. An input/output device at which data enters or leaves a computer system is?

1. Keyboard
2. Printer
3. Terminal
4. Plotter
5. None of the above

Q. The current flowing through the zener diode in figure is:

1. $20mA$
2. $25mA$
3. $15mA$
4. $5mA$

Q. What is the minimum thickness of a soap film needed forconstructive interference in reflected light, if the lightincident on the film is 750 nm? Assume that the index forthe film is n-1.33(a) 282 nm(c) 141 nm0) S(d) 5I13.(b) 70.5 nm(d) 387 nm

Q. 38.What is zener diode?

Q. What is the value of current $I$ in given circuits?

Q. What is Zener diode? How is it used as a voltage regulator?