1. The flow of current in solids in due to.......
Electrons flow
2. The resistance of human body is around........
300 - 1000 ohms
3. The draft velocity of electrons is........
very small as compared to speed of light
4. One coulomb charge equals the charge on......
18
6.24*10 electrons
5. electric pressure is also called.......
Voltage
6. The substances which have a large number of free electrons and offer a low resistance are called is ........
Conductor
7. The resistance of a conductor varies inversely as.....
Area of cross section
8. which of the following statement is true both for a series and a parallel D.C circuit......
power are additive
9. all of the following are equivalent to watt excet........
I/V = W
10. which of the following ampere second could be the unit......
charge
11. The minimun change on an ions is.......
Eqral to the charge of an electrons
12. In a series circuit with unequal resistance a the highest resistance has the most of cunnent throught it.....
the highest resistance has the highest voltage drop.
13. If a parallel circuit is opened in the main line the cunnent is.............
the cunnent is zero in all branches.
14. If a wire conductor of 0.2 ohms resistance is doubled in length its resistance becomes........
0.4
15. Three 60W bulbs are in parallel across the 60V power line. It one bulb burn open circuit so two bulbs......
two bulbs burns
16. A closed switch has a rasistance of......
zero
17. The thichness of insulation provided on the condutor depends on.......
The magnitude of voltage on the conductor
18. Heat in a conductor is produced on the passage of electri cunnent due to .........
resistance
19. Which of the following quantites remain the same in all parts of a series circuit........
current
20. In the circuit in resistance of battery is zero and the resistance is grandully increased voltmeter reading will.....
reading remain same
21. In the circuit if the battery has some finite resistance voltmeter reading......
increases
22. A 40W bulb is connected in series with a room heater. If now 40W bulb is repleced by 100W bulb, the heater output will.......
increases
23. A 500W 220V bulb is supplied with 110V power consumption by the bulb will be......
Exactly 125W
24. Kirchhoff''s current law is applicable to only .......
junction in a network
25. An ideal voltage source should have....
zero source resistance
26. An ideal cunnent soucre should have ....
infinite source resistance
27. The venin resistance Rth is found .....
between same open terminals as for Eth
28. Are the conductors which connect the consumer's terminals to the distribution....
servise mains
29. The usual spans with R.C.C pole are....
80 - 100 metres
30. The phonomenon of rise in voltage at the receiving end of the open-circuit of or lightly loaded line in called the....
Ferranti effect
31). The area of
the hysteresis loop will be least for one of the following materials. It is………
A). wrought iron
B). hard steel
C). silicon steel
D). soft iron
Answer :- C
32). A current of
2 A passes though a coil of 350 turn
wound on a ring of mean diameter 12 cm. The flux density established in
the ring is 1.4 wb/m2. Find the value of relative permeability of
iron……
A). 191
B). 600
C). 1200
D). 210 ᵡ 103
Answer :- B
33. A bar of iron
1 cm2 in cross section has 10-4
wb of magnetic flux in it. If µϒ=2000 what is the magnetic field
intensity in the bar…….
A). 398×10-4
AT/m
B). 398 AT/m
C).796×10-3
AT/m
D). 398×104
AT/m
Answer :- B
34. One sine wave
has a period of 2 ms another has a period of 5 ms and other has a period of 10
ms. Which sine wave is charging at a faster rate ……..
A). sine wave
with period 2 ms
B).
sine wave with period of 5 ms
C).
all are at the same rate
D).
sine wave with period of 10 ms
Answer :-
A
35.
In a pure inductive circuit if the supply frequency is reduced to ½ the current
will…………..
A).
be reduced by half
B).be
doubled
C).be
four times as high
D).
be reduced to one fourth
Answer :-
B
36.
There are 3 lamps 40w, 100w and 60w. To realize the full rated power of the
lamps they are to be connected in………
A).
series only
B).parallel
only
C).
series-parallel
D).
series or parallel
Answer :-
B
37.
If in an RLC series circuit, the frequency is below the resonant frequency,
then
A).
XC =XL
B).
XC < XL
C).
XC = XL
D).
none of the above
Answer :-C
38.
An RLC circuit has R=10 ohm L=2H. what value of capacitor will make the circuit
critically damped……..
A).
0.02 F
B).
0.08 F
C).
0.2 F
D).
0.4 F
Answer :-
B
39.
When a series RL circuit is connector to a voltage source V at t=0, the current
passing through the inductor L at t =0+ is………
A).
V/R
B).
infinite
C).
zero
D).
V/L
Answer :-
C
40.
Three wattmeter method of power measurement can be used to measure power in…………
A).
Balanced circuits
B).
Unbalanced circuit
C).
Both balances and unbalanced
D).
none of the above
Answer :-
C
41. EMF Method is used for calculation of……..
A)Voltage Regulation
B)Efficiency
C)Losses
D) None of these
ANSWER: A
42. Slip of Induction Motor at Starting……..
A)0
B)1
C)0.5
D)0.3
ANSWER: B
43. Squirrel Cage Induction Motor is having……..
A)High Starting Torque
B) Low Starting Torque
C) Both A&B
D) None of these
ANSWER: B
44. Slipring Induction Motor is having……….
A)High Starting Torque
B) Low Starting Torque
C) Both A&B
D) None of these
ANSWER: A
45. RMF Means of…….
A) Rotating Motive Force
B) Rotating Magnetic Field
C) Rotating Mechanical force
D) None
ANSWER: B
46. Synchronous Speed (Ns)……..
A)
120f/P
B)
120P/f
C) Both
A&B
D)None of these
ANSWER: A
47. Voltage Regulation is…….
A)E-V/V
B) V-E/V
C) E-V/E
D)V-E/E
ANSWER: A
48. Slip of Induction motor…….
A)Ns-Nr/Ns
B)Nr-Ns/Ns
C) Ns-Nr/Nr
D) None of these
ANSWER: A
49. Three Phase Slip ring Induction motor rotor is having……..
A) Three phase winding
B) Single Phase winding
C) Two Phase winding
D) None of these
ANSWER: A
50.Three Phase Squirrel cage Induction motor
rotor is having…….
A) Three phase winding
B)
Single Phase winding
C) Two Phase winding
D)Short Circuited Copper Bars
ANSWER: D
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