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WorksheetsFundamentals of Electrical Engg
Total questions: 25
Worksheet time: 13mins
Name
Class
Date
1.
The internal resistance of Practical Current Source has a………..value & connected in……….
a)
very small, parallel
b)
very large, parallel
c)
very large, series
d)
very small, series
2.
Electrical Energy 1 Unit=………..?
a)
1watt/1sec
b)
1kW/1hour
c)
1kW*1hour
d)
1watt*1hour
3.
The resistance of a conductor is R Ohm. If length of that conductor is doubled & its area of cross section is also doubled, then what will be the new resistance in Ohm?
a)
4R
b)
2R
c)
R
d)
R/2
4.
The unit of resistivity of a material is………….
a)
Ohm
b)
Ohm/meter
c)
Ohm*meter
d)
1/Ohm
5.
Electro-plating is an example of …………..effect of electric current.
a)
Heating
b)
Magnetic
c)
Chemical
d)
None of the above
6.
Three resistances of 5Ω, 10Ω & 20Ω are connected in parallel. Find their equivalent resistance.
a)
20/7Ω
b)
7/20Ω
c)
5Ω
d)
20Ω
7.
Terminal voltage of a battery cell is always………source voltage.
a)
greater than
b)
less than
c)
equal to
d)
Any of the above
8.
A point in an electric circuit at which different branches meet is called as………….
a)
Mesh
b)
Loop
c)
Branch
d)
Node
9.
This image best explains………….
a)
Ohm's law.
b)
Lenz's law
c)
Flemings Right hand rule
d)
Faraday's Law
10.
Statement: Every loop is a mesh.
a)
true
b)
false
11.
Which of the following type of resistor is used in printers, cellphones & battery charger?
a)
Cermet resistor
b)
Carbon film resistor
c)
Wire wound resistor
d)
Metal film resistor
12.
The capacitance of a capacitor depends on………..
a)
Area of plate
b)
Thickness of dielectric
c)
Relative permittivity of dielectric
d)
All of the above
13.
If the inductance of a coil is 1.2H & current flowing through it is 2A, then what will be the energy stored in the magnetic field?
a)
1.2 J
b)
2.4 J
c)
3.6 J
d)
2 J
14.
The SI unit of absolute permittivity(Ꜫ) is………
a)
H/m
b)
F/m
c)
Ω/m
d)
unitless
15.
Five capacitors of 10 microfarad each, are connected in parallel.Their equivalent is……...microfarad.
a)
2
b)
10
c)
20
d)
50
16.
Time constant of a capacitor is nothing but time required for Vc to rise from zero to …………..of its steady state value.
a)
1
b)
0.5
c)
0.368
d)
0.632
17.
Given diagram shows……….type of capacitor.
a)
Air
b)
Ceramic
c)
Electrolytic
d)
Glass
18.
Magneto-motive force (MMF) =………….?
a)
N*I
b)
N/I
c)
N*ø
d)
N/ø
19.
Kirchhoff's second law is related to………..
a)
Voltage
b)
Current
c)
Reluctance
d)
Resistance
20.
The direction of statically induced emf is given by………
a)
Lenz's law
b)
Flemings Right hand rule
c)
Flemings Left hand rule
d)
Ohm's law
21.
The flux in magnetic circuit are analogous to ………..in electric circuit.
a)
Voltage
b)
Current
c)
Resistivity
d)
Resistance
22.
……………..is used for manufacturing of cores due to its smaller hystersis loop area.
a)
Hard steel
b)
Silicon steel
c)
Plastic
d)
None of the above
23.
If there is no leakage flux,then the value of Coefficient of coupling(K) is………..
a)
1
b)
0
c)
0.5
d)
between 0 to 0.5
24.
Faraday's second law is related to……….
a)
Magnitude of induced emf
b)
Electromagnetic induction
c)
production of flux
d)
None of the above
25.
The ……………….. Is the opposition offered to the flow of flux by the magnetic circuit.
a)
Permeance
b)
MMF
c)
Reluctance
d)
Reluctivity
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