Circuit Diagram and Commonly Used Symbols

Q.

What is the difference between repeater and router?

Q.

How is a voltmeter connected in the circuit to measure the potential difference between two points?

Q.

Which of the following is an output device ?

1. Joystick

2. Microphone

3. Monitor

4. Light pen

Q.

To increase the range of a voltmeter we need to connect a suitable

1. high resistance in series

2. high resistance in parallel

3. low resistance in series

4. low resistance in parallel

Q.

What Does DMA Stand For

(A) Direct Memory Access

(B) Distinct Memory Access

(C) Direct Module Access

(D) Direct Memory Allocation

Q.

What is the principle of an ammeter?

Q.

How do you identify a Zener diode?

Q.

A set of flip flops integrated together is called __________

1. Counter

2. Adder

3. Register

4. None of the above

Q.

What is the symbol for the inductor?

Q. Match the following devices with their type of units:

1. Mouse
2. Output unit
3. Hard drive
4. Monitor
5. Input unit
6. Processing unit

1. $1-4;2-6;3-5$
2. $1-5;2-4;3-6$
3. $1-6;2-5;3-4$
4. $1-3;2-5;4-6$

Q.

Can you use a transistor as a diode$?$

Q.

What happens if you put a diode in backwards?

Q. Match the following devices with their type of units:

1. Input unit
2. Output unit
3. Processing unit

Q.

Draw the symbols for a variable resistor and a battery

Q. Match the symbols with their names:

1. Closed switch
2. Open switch
3. Bulb

Q. Draw the electrical symbols of the following components and state its use :
(a) Wire crossing
(b) Rheostat (variable resistance)
(c) Ammeter.

Q. Label the different components of the electric circuit given below.

1. Ammeter
2. Voltmeter
3. Electric bulb
4. Battery

Q. Which of following components are not present in the given part of a circuit?

1. Resistance
2. Capacitor
3. DC power source
4. None of the above

Q. Some circuit elements and their corresponding names are given below. Identify which element(s) is/are correctly named.

1. $1,2,3,5$
2. $1,2,3,4$
3. $1,3,5,6$
4. All of the above.

Q. What is the difference between Insulator and Resistance.

Q. With reference to a semi-conductor diode, what is meant by
(i) Forward bias
(ii) Reverse bias
(iii) Depletion region.

Q. Match the symbols to the corresponding components.

1. Resistor
2. Switch
3. Voltmeter

Q. Select the incorrect option.
The options below show the symbols for electrical circuit elements.

1. ii) - Switch
2. i) - Voltmeter
3. iv) - Battery
4. iii) - Ammeter

Q. ntprove the Ohms Lawn

Q. Identify the component $A$ in the given circuit.

1. Voltmeter
2. Ammeter
3. Cell
4. Rheostat

Q. While a collector to emitter voltage is constant in a transistor, the collector current changes by $8.2mA$ when the emitter current changes by $8.3mA$. The value of forward current ratio $h_{fe}$ (or $\alpha$) is

1. $0.9879$
2. $8.30$
3. $8.2158$
4. $8.0123$

Q.

The following figure represents

1. wire joint

2. resistance

3. ammeter

4. rheostat

Q. The device which measures the electric potential difference between two points is called as .

1. ammeter
2. voltmeter
3. manometer
4. barometer

Q. negative electron gain enthalpy and electron gain enthalpy order ofha\log ens

Q. Match the following electric components.

1. Switch
2. Bulb
3. Cell