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WorksheetsBEE EXAM
Total questions: 115
Worksheet time: 2hrs 55mins
Name
Class
Date
1.
is a Electrical hazard
a)
Exposed wires
b)
Faulty or broken wiring
c)
Working under wet conditions
d)
all of these
2.
Causes of Electrical accidents
a)
Over Voltage
b)
Short Circuit
c)
Over Current
d)
all of these
3.
CPR Stands for
a)
Cardiopulmonary Resuscitation
b)
Cardiopatient Resuscitation
c)
Cardiopositive reduction
d)
Cardiopulmonary reduction
4.
Copper is a example of
a)
Insulator
b)
Semiconductor
c)
none
d)
Conductor
5.
Glass is a example of
a)
Insulator
b)
Semiconductor
c)
none
d)
Conductor
6.
Aluminium is a example of
a)
Insulator
b)
Semiconductor
c)
none
d)
Conductor
7.
Rubber is a example of
a)
Insulator
b)
Semiconductor
c)
none
d)
Conductor
8.
Steel is a example of
a)
Insulator
b)
Semiconductor
c)
none
d)
Conductor
9.
Silicon is a example of
a)
Insulator
b)
Semiconductor
c)
none
d)
Conductor
10.
Allows charge to flow without resistance
a)
Insulator
b)
Semiconductor
c)
none
d)
Conductor
11.
Atoms are not easily freed, thus stable, preventing flow of electricity
a)
Insulator
b)
Semiconductor
c)
none
d)
Conductor
12.
Which of the following is an active element
a)
Resistor
b)
capacitor
c)
transistor
d)
none of these
13.
Transistor is
a)
Active Component
b)
Passive Component
c)
none of these
d)
both A & B
14.
Inductor is
a)
Active Component
b)
Passive Component
c)
none of these
d)
both A & B
15.
In electronics the term IC denotes -
a)
Industrial Control
b)
Integrated Control
c)
Intregated Circuit
d)
International Circuit
16.
An Electronic component which can process the Signal are called
a)
Active Component
b)
Passive Component
c)
none of these
d)
both A & B
17.
A variable resistor can be used as
a)
Diode
b)
potential divider
c)
inductor
d)
none of these
18.
Unit of capacitance is
a)
Ohm
b)
Henry
c)
Farad
d)
Ampere
19.
Unit of resistance is
a)
Ohm
b)
Henry
c)
Farad
d)
Ampere
20.
Unit of inductance is
a)
Ohm
b)
Henry
c)
Farad
d)
Ampere
21.
The third colour in coding of four band resistors signifies
a)
Tolerance
b)
Multiplier
c)
significant digit
d)
none of these
22.
If the tolerance band is of gold colour in a carbon resistor , it has
% tolerance
a)
20
b)
10
c)
5
d)
15
23.
If the tolerance band is of silver colour in a carbon resistor , it has
% tolerance.
a)
20
b)
10
c)
5
d)
15
24.
If the tolerance band is absent in a carbon resistor , it has % tolerance.
a)
20
b)
10
c)
5
d)
15
25.
If a carbon resistor has colour bands in the order brown, black, yellow and gold , the corresponding resistance value is
a)
100Ω ± 5%
b)
100KΩ ± 5%
c)
1000Ω ± 5%
d)
100KΩ ± 10%
26.
If a carbon resistor has colour bands in the order red, red, red and gold , the corresponding resistance value is
a)
2.2KΩ ± 5%
b)
222 Ω ± 5%
c)
22.2KΩ ± 10%
d)
2.2KΩ ± 10%
27.
Which of the following is not a semiconductor?
a)
germanium
b)
silicon
c)
arsenic
d)
all of these
28.
The property of a diode is its tendency to conduct electric current in
direction
a)
one
b)
two
c)
both A & B
d)
None of these
29.
The component is used in rectifier circuits
a)
Diode
b)
Capacitor
c)
Inductor
d)
None of these
30.
A reverse biased pn junction has .
a)
very narrow depletion layer
b)
almost no current
c)
very low resistance
d)
large current flow
31.
The layer that is formed at the junction of two semiconductor material is known as
a)
depletion layer
b)
fermi level
c)
energy level
d)
none of these
32.
With forward bias to pn junction, the width of depletion layer
a)
decreases
b)
increases
c)
remains the same
d)
none of the above
33.
When a reverse bias is applied to a junction diode, it
a)
lowers the potential barrier
b)
raises the potential barrier
c)
increases the majority carrier current
d)
all of the above
34.
A transistor has pn junctions.
a)
1
b)
2
c)
3
d)
4
35.
Transistors are most widely used in
a)
Switching
b)
Amplification
c)
Rectifier circuits
d)
Both A & B
36.
Transistor is composed of material
a)
Conductor
b)
Insulators
c)
Semiconductor
d)
both A & B
37.
In electronics the term IC denotes -
a)
Industrial Control
b)
Integrated Control
c)
Intregated Circuit
d)
International Circuit
38.
BJT denotes -
a)
Bipolar Junction Transistor
b)
Bipolar junction transducer
c)
Bipolar junction terminal
d)
bimetallic junction transistor
39.
An integrated circuit is also known as a
a)
microchip
b)
megachip
c)
international circuit
d)
both b & c
40.
Wires are made up of -
a)
copper
b)
aluminium
c)
silver
d)
all of there
41.
An ammeter is a measuring instrument used to measure the
in a circuit
a)
Current
b)
Voltage
c)
resistance
d)
Both a & b
42.
An ammeter is connected in with the circuit element whose current is to be measured.
a)
series
b)
parallel
c)
series or parallel
d)
none of these
43.
A voltmeter is a measuring instrument used to measure the
in a circuit
a)
current
b)
Potential difference
c)
resistance
d)
both b& c
44.
A voltmeter is connected in with the circuit element across which potential differenc is to be measured.
a)
series
b)
parallel
c)
series or parallel
d)
none of these
45.
CRO stands for
a)
Cathode radiation oscilloscope
b)
Cathode Ray Tube
c)
Cathode Ray Oscilloscope
d)
Common Radiation
Oscillator
46.
CRO is used to measure
a)
Amplitude
b)
Frequency
c)
Time
d)
all of these
47.
A is used to measure multi electrical quantities.
a)
Ammeter
b)
Voltmeter
c)
Multimeter
d)
Ohmmeter
48.
A multimeter can measure
a)
current
b)
voltage
c)
resistance
d)
all of these
49.
Potential difference is the cause for the flow of current in a
circuit
a)
close
b)
Open
c)
all of these
d)
none of these
50.
The unit of potential difference is
a)
volt
b)
Ampere
c)
hendry
d)
hertz
51.
The capacity of a charged body to do work is
a)
Current
b)
Electrical Potential
c)
Energy
d)
charge
52.
The device which maintains the potential difference between two points will develop an emf
a)
Cell
b)
Battery
c)
Resistor
d)
Both a & b
53.
Flow of free electrons in an definite direction is called as
a)
Voltage
b)
Current
c)
Potential difference
d)
Joule
54.
The unit of current is
a)
volt
b)
Ampere
c)
hendry
d)
hertz
55.
The rate of charge with respect to time is -
a)
Voltage
b)
Current
c)
Potential difference
d)
Joule
56.
The property of the substance which opposes flow of electric current is known as
a)
resistance
b)
Capacitance
c)
inductance
d)
conductance
57.
Ohms law is not applicable in
a)
For electronic valves
b)
For arc lamps
c)
All non-metallic materials
d)
all of these
58.
A lamp is connected at 110V supply and taking a current of 0.65A. What is its resistance?
a)
169.23Ω
b)
59 Ω
c)
75 Ω
d)
69 Ω
59.
resistances are connected end to end so that there is only one path for current to flow is called a circuit
a)
series
b)
parallel
c)
all of these
d)
series & Parallel
60.
in series resistance circuit current flowing in each element of circuit is
a)
same
b)
not equal
c)
partially same
d)
zero
61.
in Parallel resistance circuit is same across all the circuits.
a)
current
b)
voltage
c)
resistance
d)
none of these
62.
If R1,R2 resistors are connected in parallel, then the effective resistance is given by the relation
a)
R1+R2
b)
R1R2/(R1+R2)
c)
R1R2 /(R1-R2)
d)
R1-R2
63.
If R1,R2 resistors are connected in series, then the effective resistance is given by the relation
a)
R1+R2
b)
R1R2/(R1+R2)
c)
R1R2 /(R1-R2)
d)
R1-R2
64.
Ohm’s law is given by the relation
a)
I=VR
b)
I=V/R
c)
I=R/V
d)
None of these
65.
Resistance offered by a conductor is inversely proportional to
a)
Its length
b)
its cross section
c)
its specific resistance
d)
none of these
66.
The unit of resistance is .
a)
volt
b)
ampere
c)
mho
d)
ohm
67.
If two resistors of 100Ω and 100Ω are connected in parallel, the effective resistance is given by
a)
50Ω
b)
100Ω
c)
1000Ω
d)
0.2Ω
68.
If two resistors of 470Ω and 360Ω are connected in series, the effective resistance is given by
a)
830Ω
b)
380Ω
c)
204Ω
d)
820Ω
69.
Kirchhoff’s current law is applicable to only
a)
closed loops in a network
b)
junction voltages
c)
junctions in a network
d)
none of these
70.
Kirchhoff’s voltage law is concerned with
a)
IR drops
b)
battery e.m.fs
c)
junction voltages
d)
both a. and b.
71.
According to KVL, the algebraic sum of all IR drops and e.m.fs in any closed loop of a network is always .
a)
zero
b)
negative
c)
Positive
d)
determined by battery e.m.fs
72.
According to KCL the algebraic sum of currents meeting at a point is
a)
zero
b)
negative
c)
Positive
d)
none of these
73.
A fuse is provided in electrical circuit for
a)
Safeguarding the circuit against heavy currents
b)
Decreasing the current flowing in the circuit
c)
Increasing the current flow in the circuit
d)
Increasing the
power consumption in
74.
Miniature Circuit Breakers are devices
a)
electromechanical
b)
electrical
c)
mechanical
d)
both b & c
75.
Type C MCB used for inductive load
a)
Moderate
b)
high
c)
low
d)
both b & c
76.
Type D MCB used for inductive load
a)
Moderate
b)
high
c)
low
d)
both b & c
77.
Type B MCB used for inductive load
a)
Moderate
b)
high
c)
low
d)
both b & c
78.
The ELCB is used to protect the circuit from the
a)
electrical leakage
b)
heavy current
c)
decreasing current flow
d)
low voltage
79.
The purpose of providing Earthing is to prevent
to the human body
a)
electrical shock
b)
burn
c)
Injury
d)
none of these
80.
BJT denotes _________________________-
a)
Bipolar Junction Transistor
b)
Bipolar junction transducer
c)
Bipolar junction terminal
d)
bimetallic junction transistor
81.
The __________________ component is used in rectifier circuits
a)
Diode
b)
Capacitor
c)
Inductor
d)
None of these
82.
Unit of capacitance is ________
a)
Ohm
b)
Henry
c)
Farad
d)
Ampere
83.
Inductor is _____________________
a)
Active Component
b)
Passive Component
c)
none of these
d)
both A & B
84.
Wires are made up of _____________________-
a)
copper
b)
aluminium
c)
silver
d)
all of these
85.
CRO stands for ________________________
a)
Cathode radiation oscilloscope
b)
Cathode Ray Tube
c)
Cathode Ray Oscilloscope
d)
Common Radiation Oscillator
86.
If R1,R2 resistors are connected in parallel, then the effective resistance is given by the relation ________
a)
R1+R2
b)
R1R2/(R1+R2)
c)
R1R2 /(R1-R2)
d)
R1-R2
87.
in Parallel resistance circuit ________________ is same across all the circuits.
a)
current
b)
voltage
c)
resistance
d)
none of these
88.
Resistance offered by a conductor is inversely proportional to __________
a)
Its length
b)
its cross section
c)
its specific resistance
d)
none of these
89.
The unit of potential difference is ________________________
a)
volt
b)
Ampere
c)
hendry
d)
hertz
90.
The property of the substance which opposes flow of electric current is known as _____________
a)
resistance
b)
Capacitance
c)
inductance
d)
conductance
91.
Miniature Circuit Breakers are ______________________ devices
a)
electromechanical
b)
electrical
c)
mechanical
d)
both b & c
92.
Type B MCB used for __________________ inductive load
a)
Moderate
b)
high
c)
low
d)
both b & c
93.
A fuse is provided in electrical circuit for __________
a)
Safeguarding the circuit against heavy currents
b)
Decreasing the current flowing in the circuit
c)
Increasing the current flow in the circuit
d)
Increasing the power consumption in the circuit
94.
Type C MCB used for __________________ inductive load
a)
Moderate
b)
high
c)
low
d)
both b & c
95.
A pn junction that radiates energy as light instead of as heat is called a ___________.
a)
LED
b)
photo diode
c)
photocell
d)
zener diode
96.
Strain guage converts forcce in to _____________
a)
electrical resistance
b)
weight
c)
tension
d)
none of these
97.
In a transformer , the coil in which electric energy is fed from ac supply is called ________ winding.
a)
tertiary
b)
primary
c)
secondary
d)
none of these
98.
AC voltage can be increased or decreased by _____
a)
Generator
b)
Alternator
c)
Transformer
d)
Motor
99.
A transformer steps up or steps down
a)
a.c. only
b)
d.c. only
c)
either a.c. or d.c.
d)
a.c. mixed with d.c.
100.
If the primary coil has 3 turns and the secondary coil has 30 turns, the voltage is
a)
stepped up 30 times
b)
stepped up 10 times
c)
stepped down 3 times
d)
stepped down 10 times
101.
In a shunt wound DC motor the field winding is connected _________ with armature
a)
In series
b)
in parallel
c)
in series parallel
d)
none
102.
In a series wound DC motor the field winding is connected _________ with armature
a)
In series
b)
in parallel
c)
in series parallel
d)
none
103.
A _________ is used to measure multi electrical quantities
a)
Ammeter
b)
Voltmeter
c)
Multimeter
d)
Ohmmeter
104.
The unit of current is __________________
a)
volt
b)
Ampere
c)
hendry
d)
hertz
105.
LCD stands for-----
a)
Liquid crystal display
b)
Light cathode device
c)
liquid cathode display
d)
light crystal display
106.
Pressure sensor is used to measure______________________
a)
force
b)
pressure
c)
strain
d)
all of these
107.
Single Phase AC motor designed to operate with_______________
a)
230 V
b)
440V
c)
1100V
d)
all of these
108.
Transformer works on the principle of __________
a)
KVL
b)
KCL
c)
ohm's law
d)
mutual induction
109.
In a transformer if the o/p voltage is greater than i/p voltage it is called as a _______ transformer.
a)
step up transformer
b)
step down transformer
c)
isolation transformer
d)
none of these
110.
Transformer transforms electric power
a)
with change in frequency
b)
without change in frequency
c)
without mutual inducton
d)
none of these
111.
Which of the following is not a basic element of a transformer?
a)
core
b)
primary winding
c)
secondary winding
d)
rotor
112.
LED stands for __________________
a)
Light Emitting Device
b)
Light Emitts diode
c)
Light Emitting Diode
d)
Low Emitting Device
113.
In a step down transformer , the transformation ratio ( K) is
a)
greater than one
b)
less than one
c)
equal to one
d)
none of the above
114.
A machine that converts electric power into mechanical power is called________
a)
Transformer
b)
Generator
c)
Motor
d)
All of the above
115.
A step-up transformer increases
a)
voltage
b)
current
c)
power
d)
frequency
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