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Worksheets

BEEE QUIZ

Total questions: 120

Worksheet time: 20mins

Name
Class
Date
1.

If the conductor resistance is 50 ohm and the current passing through it is 5 A. What is the value of potential difference?

a)

50V

b)

150 V

c)

250V

d)

15V

2.

A potential difference of 10 V is applied across a conductor whose resistance is 2.5 ohm. What is the value of current flowing through it?

a)

10A

b)

4A

c)

6A

d)

2A

3.

The algebraic sum of voltages around any closed path in a network is equal to ____________

a)

1

b)

0

c)

Infinity

4.

All _____________ are loops but _______________ are not meshes

a)

Loops, Meshes

b)

Meshes, loops

c)

Branches, loops

5.

A path which contains more than two meshes is called___

a)

mesh

b)

loop

6.

A circuit has three incoming currents having values 5 A, 9 A, and 1 A and two outgoing currents passing through two parallel resistors having equals values of resistance. The outgoing current flowing through first parallel resistor will be

a)

5A

b)

7.5A

c)

1A

d)

9A

7.

Every____________ is a ____________ but every __________ is not a __________

a)

Loop, mesh, mesh, loop

b)

Mesh, loop, loop, mesh

c)

Loop, mesh, loop, mesh

8.

Find R for the circuit given.

a)

C.120

b)

B.68

c)

A.34

d)

D.154

9.

A 12 mA current source has an internal resistance, R, of 1.2 k. The equivalent voltage source is

a)

A.144 V

b)

D.72 mV

c)

B.14.4 V

d)

C.7.2 V

10.

What techniques used to find the currents circulating around a loop or mesh with in any closed path of a circuit?

a)

Kirchhoffs Current Law

b)

Nodal Voltage Analysis

c)

Mesh current Analysis

d)

Kirchhoffs Voltage Law

11.

A closed loop conducting path in which an electrical current flows.

a)

Circuit

b)

Loop

c)

Node

d)

Branch

12.

A single closed path in a circuit in which no circuit element or node is encountered more than once.

a)

Circuit

b)

Loop

c)

Node

d)

Branch

13.

What is Thevenin's Theorem about?

a)

Thevenin's Theorem is used to calculate the power factor in AC circuits.

b)

Thevenin's Theorem states that all circuits can be simplified to a single current source.

c)

Thevenin's Theorem provides a method to simplify complex linear circuits into a single voltage source and resistor.

d)

Thevenin's Theorem applies only to non-linear circuits.

14.

What does the Superposition Theorem help us do?

a)

It simplifies the design of non-linear circuits.

b)

It helps us calculate the total resistance in a circuit.

c)

It helps us analyze linear circuits by considering one source at a time.

d)

It allows us to measure current flow in real-time.

15.

How do we find the maximum power transfer?

a)

Set load resistance to zero.

b)

Set load resistance equal to Thevenin resistance.

c)

Use a capacitor in series with the load.

d)

Increase the voltage across the load.

16.

What is a simple example of the Superposition Theorem?

a)

In a circuit with two voltage sources, the total current through a resistor is the sum of the currents from each voltage source acting independently.

b)

The total voltage across a resistor is the sum of the voltages from each source acting together.

c)

The Superposition Theorem states that the total power in a circuit is the sum of the powers from each source.

d)

In a circuit with one voltage source, the total current is equal to the voltage divided by the resistance.

17.

Why is the maximum power transfer theorem important?

a)

It maximizes power transfer to the load.

b)

It simplifies the circuit design process.

c)

It ensures the circuit operates at maximum voltage.

d)

It reduces energy consumption in the circuit.

18.

Power that is transferred to load when load resistance equals Thevenin resistance is

a)

Equal power

b)

Minimum power

c)

Maximum power

d)

Zero Power

19.

Efficiency of power transfer when maximum transfer of power occurs is

a)

80%

b)

100%

c)

50%

d)

75%

20.

For maximum transfer of power, internal resistance of the source should be

a)

less than the load resistance

b)

none of the above

c)

equal to load resistance

d)

greater than the load resistance

21.

If there is a 12A current source in series with 2Ω and in parallel with a 4Ω resistor, then voltage V=?

a)

3V

b)

24V

c)

6V

d)

48V

22.

Three resistances 20 Ω, 30 Ω and 60 Ω are connected in parallel, their combined resistance is given by

a)

50 Ω

b)

20 Ω

c)

10 Ω

23.

Thevenin's theorem for ac circuits states that any two-terminal linear ac network can be replaced by an equivalent circuit consisting of a voltage source and an impedance in series.

a)

TRUE

b)

FALSE

24.

What is the purpose of using Thévenin's equivalent circuit?

a)

To replace all circuit components

b)

To measure current directly

c)

To increase circuit complexity

d)

To simplify circuit analysis

25.

What is the first step in finding the Thévenin equivalent circuit?

a)

Short the voltage sources

b)

Add a new voltage source

c)

Remove the load resistor

d)

Measure the current

26.

A small component that lights up when current flows through it

a)

capacitor

b)

resistor

c)

circuit

d)

light emitting diode

27.

Select the correct symbol for a battery

a)

b)

c)

d)

28.

identify Thevenin Equivalent Circuit

a)

b)

c)

d)

29.

Thevenin Equivalent Circuit

Convert this Thevenin to norton

a)

b)

c)

d)

30.

The image is the symbol for a

a)

conductor

b)

resistor

c)

LED

d)

diode

31.

Choose the equivalent

a)

b)

c)

d)

32.

Choose the best equivalent

a)

b)

c)

33.

This is a

a)

Transistor

b)

Relay

c)

Buzzer

d)

Motor

34.

The name of this component:

a)

photocell

b)

capacitor

c)

resistor

d)

transistor

35.

The name of this component:

a)

transistor

b)

photocell

c)

potentiometer

d)

transistor

36.

The name of this component:

a)

transistor

b)

potentiometer

c)

diode

d)

photocell

37.

The image is the symbol for:

a)

transistor

b)

potentiometer

c)

photocell

d)

resistor

38.

The function of a transistor is:

a)

perform the function of an electronic switch

b)

control the amount of electrical current

c)

store electrical charge

d)

control the direction of current

39.

The function of this component is to:

a)

vary the amount of resistance

b)

hold electrical charge

c)

act as an electrical switch

d)

allow current to pass in only one way

40.

The function of this component is:

a)

to indicate the presence of current (ON/OFF states

of electrical components

b)

vary resistance to a circuit by the amount of light

that strikes its surface

c)

to perform the function of a switch or an amplifier

d)

to create various kinds of time delays in a circuit

41.

The name of this component is:

a)

Motion sensor

b)

Potentiometer

c)

RGB LED

d)

Light bulb

42.

Convert this Thevenin to a Norton.

a)

I = 11.2A , R = .8Ω

b)

I = 14A , R = 2Ω

c)

I = 14A , R = 0.8Ω

d)

I = 11.2A , R = 2Ω

43.

What is the Norton Resistance?

a)

12Ω

b)

6Ω

c)

7.5Ω

d)

14Ω

44.

Find the node voltage V .

a)

6 V

b)

4.25 V

c)

12 V

d)

3 V

45.

What is the current through R ?

a)

173 mA

b)

3.19 A

c)

319 mA

d)

1.73 A

46.

Find the Thevenin equivalent (V and R ) between terminals A and B of the circuit given below.

a)

4.16 V, 120

b)

41.67 V, 70

c)

4.16 V, 70

d)

41.6 V, 120

47.

Find R for the circuit given.

a)

120

b)

68

c)

34

d)

154

48.

What techniques used to find the currents circulating around a loop or mesh with in any closed path of a circuit?

a)

Kirchhoffs Current Law

b)

Nodal Voltage Analysis

c)

Mesh current Analysis

d)

Kirchhoffs Voltage Law

49.

It reduces his circuit down to a single resistance in parallel with a constant current source.

a)

Norton

b)

Mesh

c)

Node

d)

Ohms

50.

A capacitor is generally:

a)

Linear, bilateral and passive

b)

Linear and unilateral

c)

Linear, active and bilateral component

d)

Bilateral and active component

51.

Find the value of R

a)

12 Ω

b)

4.36 Ω

c)

16 Ω

d)

10 Ω

52.

Superposition theorem is not applicable for

a)

Voltage calculations

b)

Power calculations

c)

Passive elements

d)

Bilateral elements

53.

.The real current source has ____________ but finite internal resistance.

a)

Zero

b)

Large

c)

Small

d)

None of these

54.

Which elements obey Ohm’s law.

a)

Unilateral

b)

Non-linear

c)

Linear

d)

All of these

55.

What is a simple example of the Superposition Theorem?

a)

In a circuit with two voltage sources, the total current

through a resistor is the sum of the currents from

each voltage source acting independently.

b)

The total voltage across a resistor is the sum of the

voltages from each source acting together.

c)

The Superposition Theorem states that the total

power in a circuit is the sum of the powers from each

source.

d)

In a circuit with one voltage source, the total current

is equal to the voltage divided by the resistance.

56.

What is the relationship between the short-circuit current (IN) and the equivalent resistance (RN) in a Norton equivalent circuit?

a)

IN = RN * VTh

b)

IN = VTh - RN

c)

IN = VTh / RN

d)

IN = VTh + RN

57.

What is the main advantage of using equivalent circuits?

a)

They eliminate the need for resistors

b)

They make calculations easier

c)

They provide exact measurements

d)

They are only theoretical

58.

Is this a short circuit?

a)

Yes if the button is pushed the light would go out

b)

No since both lights would be on if switch closed but

still one light would be on if open

c)

No because you cant have a short circuit with a

switch

d)

Yes, if the switch is closed the bottom light would go

on and the first light would go off.

59.

In order to create an electric charge, what type of particle must be added or removed from an object?

a)

proton

b)

alpha particle

c)

neutron

d)

electron

60.

A balloon has a negative charge. A glass rod has a positive charge. What will happen when the rod is brought

near the balloon?

a)

the balloon will spin in circles

b)

the balloon will be repelled by the rod

c)

the balloon will remain in place

d)

the balloon will be attracted to the rod

61.

RMS value of AC is equal to

a)

0.637 max value

b)

0.537 max value

c)

0.707max value

d)

0.123 max value

62.

. Formfactor of ac wavefrom

a)

1.11

b)

0.638

c)

0.707

d)

0.123

63.

Identify the resistor if it has three consecutive lines blue, green and red----------------

(a)  

64.

Human body is a

a)

a) Insulator

b)

b) Semiconductor

c)

c) Superconductors

d)

d) Conductor

65.

LED is a diode

a)

a) False

b)

b) True

66.

Transistors replaced the bulky

a)

a) Diode

b)

b) Vaccum tubes

c)

c) Resistors

d)

d) Transformers

67.

Which of the following quantities cannot be measured using Multi-Meter:

a)

a) Current

b)

b) Power Factor

c)

c) Voltage

d)

d) Resistance

68.

In a Circuit, Ammeter should be always connected in ____ arrangement

a)

a) Parallel

b)

b) Either in Series or in Parallel

c)

c) Series

d)

d) Can be connected in both

69.

Wattmeter is used to measure which of the following:

a)

a) DC Power only

b)

b) Both AC Power and DC Power

c)

c) AC Power only

70.

A pointer of an instrument once deflected returns to zero position, when the current is removed due to

a)

a) Mass of the pointer

b)

b) Damping Torques

c)

c) Controlling Torque

d)

d) Action of gravity

71.

Which of the following error is caused by poor calibration of the instrument?

a)

a) Systematic error

b)

b) Random error

c)

c) Gross error

d)

d) Precision error

72.

Which of the following types of instrument can be used for D.C only?

a)

a) Moving iron attraction type

b)

b) Moving Iron repulsion type

c)

c) Permanent magnet type

d)

d) Hotwire type

73.

A moving iron instrument can be used for

a)

a) None of the above

b)

b) AC only

c)

c) DC only

d)

d) Both AC and DC

74.

The advantages of moving coil permanent magnet type instrument are

a)

a) All of the above

b)

b) Efficient eddy current damping

c)

c) Low power consumption

d)

d) No hysteresis loss

75.

The deflecting torque in an instrument may be produced

a)

a) Magnetically

b)

b) Thermally

c)

c) Electrostatically

d)

d) Any of the above

76.

To solve matrix equation, we can use

a)

a) Newton Law

b)

b) Cramer's rule

c)

c) Pascal's Law

d)

d) Elimination

77.

By applying KCL in the node v2 we can get equation...

a)

a) 9=i4+i3

b)

b) i3+3+6=0

c)

c) i3=9+i4

d)

d) i3+3=i4+6

e)

e) i3+3+6=i4

78.

Find V2 in the figure using loop

a)

a) V2=1.6V

b)

b) V2=1.5 V

c)

c) V2=2 V

d)

d) V2=3V

e)

e) V2=1.7V

79.

Application of KCL is combining current source in parallel. The combined current is ...

a)

a) The algebraic sum of the current supplied by the

individual resistors

b)

b) The algebraic sum of the current supplied by the

individual mesh

c)

c) The algebraic sum of the current supplied by the

individual sources

d)

d) The algebraic sum of the current supplied by the

individual voltages

e)

e) The algebraic sum of the current supplied by the

individual nodes

80.

Nodal analysis produces a compact set of equations for the network, which can be solved by ...

a)

a) Manual

b)

b) Cramer's Rule

c)

c) Computer

d)

d) Mesh Analysis

e)

e) Together with friends

81.

. A supernode is formed by?

a)

a) Circuit with many transistors

b)

b) enclosing a voltage source connected between two

non-reference nodes and any elements connected

parallel with it

c)

c) enclosing a voltage source connected between two

non-reference nodes and any elements connected

series with it

d)

d) capacitors with high capacitance

e)

e) many resistor with high resistance

82.

The current in 10Ω resistor in figure is

a)

a) 3.5 A

b)

b) 3 A

c)

c) 1.5 A

d)

d) 2.5 A

83.

In figure

a)

a) the lamp B will be brighter than lamp A.

b)

b) none of the above

c)

c) the two lamps will be equally bright

d)

d) the lamp A will be brighter than lamp B.

84.

What is the total resistance in this circuit?

a)

a) 37 ohms

b)

b) 6.3 ohms

c)

c) 5.7 ohms

d)

d) 11 ohms

85.

The value of i1 , i2 , i3 , i4 , i5

a)

a) 32A, 16A, 48A, 56A, 8A

b)

b) 56A, 8A, 32A, 16A, 48A

c)

c) 56A, 8A, 16A, 48A, 32A

d)

d) 56A, 16A, 32A, 48A, 8A

86.

Equation for this circuit is :

a)

a) R1R2 = R3Rx

b)

b) R1Rg = RxRg

c)

c) R1R3 = R2Rx

d)

d) R1Rx = R3R2

87.

The picture shows a series circuit with three lit bulbs. How many of the bulbs will remain lit if the wire is cut at the

point shown by the arrow?

a)

a) 3

b)

b) 0

c)

c) 2

d)

d) 1

88.

  1. What is the principle of operation of a DC motor?




a)

  1. a) Electromagnetic induction

b)

  1. b) Faraday’s law of electrolysis

c)

  1. c) Fleming’s left-hand rule

d)

  1. d) Coulomb’s law

89.

  1. The back EMF in a DC motor:




a)

  1. a) Opposes the applied voltage

b)

  1. b) Aids the applied voltage

c)

  1. c) Is equal to the applied voltage

d)

  1. d) Does not depend on speed

90.

  1. The speed of a DC shunt motor can be increased by:




a)

  1. a) Increasing armature resistance

b)

  1. b) Decreasing field current

c)

  1. c) Increasing field current

d)

  1. d) Decreasing terminal voltage

91.

  1. Which DC motor has the highest starting torque?



a)

  1. a) Shunt motor

b)

  1. b) Series motor

c)

  1. c) Compound motor

d)

  1. Permanent magnet motor

92.

A DC generator works on the principle of:



a)

a) Faraday’s law of electromagnetic induction

b)

b) Lenz’s law

c)

c) Fleming’s right-hand rule

d)

d) Both a) and c)

93.

  1. The function of a commutator in a DC generator is to:




a)

  1. a) Convert AC to DC

b)

  1. b) Increase voltage

c)

  1. c) Reduce losses

d)

  1. d) Provide mechanical support

94.

  1. A single-phase transformer works on:


a)

  1. a) DC supply

b)

  1. b) AC supply

c)

  1. c) Both AC and DC

d)

  1. d) Pulsed DC

95.

  1. The turns ratio of a transformer is 5:1. If the primary voltage is 220V, the secondary voltage is:




a)

  1. a) 44V

b)

  1. b) 1100V

c)

  1. c) 220V

d)

  1. d) 55V

96.

  1. The core of a transformer is laminated to reduce:




a)

  1. a) Copper losses

b)

  1. b) Hysteresis losses

c)

  1. c) Eddy current losses

d)

  1. d) Windage losses

97.

  1. An ideal transformer has:




a)

  1. a) Zero losses and 100% efficiency

b)

  1. b) 50% efficiency

c)

  1. c) Only hysteresis losses

d)

  1. d) Leakage flux

98.

  1. What is the most commonly used semiconductor material?




a)

  1. a) Copper

b)

  1. b) Silicon

c)

  1. c) Aluminum

d)

  1. d) Iron

99.

  1. Doping in semiconductors is done to:




a)

  1. a) Increase resistivity

b)

  1. b) Decrease conductivity

c)

  1. c) Modify electrical properties

d)

  1. d) Make it a perfect insulator

100.

  1. The potential barrier in a silicon PN junction is approximately:




a)

  1. a) 0.3V

b)

  1. b) 0.7V

c)

  1. c) 1.2V

d)

  1. d) 5V

101.

  1. Reverse saturation current in a diode depends on:



a)

  1. a) Forward voltage

b)

  1. b) Temperature

c)

  1. c) Doping concentration

d)


  1. d) Diode capacitance

102.

  1. A diode is primarily used as a:




a)

  1. a) Voltage regulator

b)

  1. b) Current amplifier

c)

  1. c) Rectifier

d)

  1. d) Oscillator

103.

  1. A Zener diode operates in:



a)

  1. a) Forward bias only

b)

  1. b) Reverse bias only

c)

  1. c) Breakdown region

d)

  1. d) Cutoff region

104.

  1. Zener breakdown occurs due to:




a)

  1. a) High electric field

b)

  1. b) Thermal effects

c)

  1. c) Doping concentration

d)

  1. d) Magnetic field

105.

  1. A BJT has how many PN junctions?




a)

  1. a) 1

b)

  1. b) 2

c)

  1. c) 3

d)

  1. d) 4

106.

The current gain (β) of a BJT is defined as:

a)

a) IC/IE

b)

b) IC/IB​

c)

c) IE/IB​​​

d)

d) IB/IC​​

107.

  1. A BJT operates in the active region when:




a)

  1. a) Emitter-base junction is forward biased, collector-base junction is reverse biased

b)

  1. b) Both junctions are forward biased

c)

  1. c) Both junctions are reverse biased

d)

  1. d) Emitter-base junction is reverse biased

108.

A depletion-mode MOSFET conducts when:



a)

a) VGS=0

b)

b) VGS>0VGS​>0

c)

c) VGS<0

d)

d) Only at high temperatures

109.

An enhancement-mode MOSFET turns on when:

a)

a) VGS=0

b)

b) VGS>Vth

c)

c) VGS<0

d)

d) No gate voltage is needed

110.

The main advantage of a MOSFET over a BJT is:



a)

a) Higher input impedance

b)

b) Higher power dissipation

c)

c) Lower switching speed

d)

d) More complex biasing

111.

The binary equivalent of decimal 13 is:



a)

a) 1101

b)

b) 1011

c)

c) 1110

d)

d) 1001

112.

The octal equivalent of binary 101101 is:



a)

a) 45

b)

b) 55

c)

c) 65

d)

d) 75

113.

The hexadecimal equivalent of binary 11101110 is:



a)

a) EE

b)

b) EF

c)

c) FE

d)

d) FF

114.

BCD representation of decimal 9 is:



a)

a) 1001

b)

b) 1100

c)

c) 1010

d)

d) 1111

115.

Gray code for binary 1100 is:



a)

a) 1010

b)

b) 1100

c)

c) 1001

d)

d) 1110

116.

The output of a NAND gate is 0 only when:



a)

a) All inputs are 0

b)

b) Any input is 0

c)

c) All inputs are 1

d)

d) Any input is 1

117.

  1. An XOR gate outputs 1 when:




a)

  1. a) Both inputs are same

b)

  1. b) Both inputs are different

c)

  1. c) Any input is 1

d)

  1. d) All inputs are 1

118.

According to Boolean algebra, A+A‾B

a)

A

b)

A+B

c)

A‾B

d)

AB

119.

The simplified form of A(A+B)
a) AA
b) BB
c) ABAB
d) A+BA+B

a)

A

b)

B

c)

AB

d)

A+B

120.

State de-morgan law


(a)