Electrical Engineering Quiz 59
1 / 50
Which of the following, in a thermal power plant, is not a fixed cost?
2 / 50
In a load curve the highest point represents______________?
3 / 50
Double tuned circuits are used in ____________ stages of a radio receiver?
4 / 50
The purpose of using short-circuit gear is___________?
5 / 50
The purpose of providing iron core in a step-up transformer is?
6 / 50
For constant torque drive which speed control method is preferred ?
7 / 50
The capacity of a crane is expressed in terms of_______________?
8 / 50
In an RC coupling scheme, the coupling capacitor CC must be large enough______________?
9 / 50
In a three-phase induction motor__________?
10 / 50
Five light bulbs are connected in parallel across 110 V. Each bulb is rated at 200 W. The current through each bulb is approximately___________?
11 / 50
In an RC coupled amplifier, the voltage gain over mid-frequency range_____________?
12 / 50
At _______ frequencies the parallel R-L circuit behaves as purely resistive
13 / 50
The design of mechanical parts is particularly important in case of __________ speed machines?
14 / 50
The arc voltage produced in A.C. circuit breaker is always_____________?
15 / 50
In the case of an unsymmetrical alternating current the average value must always be taken over__________?
16 / 50
The transient currents are associated with the____________?
17 / 50
Addition of 0.3 to 4.5% silicon to iron ________ the electrical resistivity of iron?
18 / 50
In BJT, the forward biased base emitter junction inject holes from base to emitter, the holes_______?
19 / 50
Which of the following insulation is used in cables ?
20 / 50
In a D.C. generator:___________________?
21 / 50
Materials exhibiting zero value of resistivity are known as ____________ ?
22 / 50
Light duty cranes are used in which of the following ?
23 / 50
A 10 V power supply would use ____________ as filter capacitor?
24 / 50
In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at_____________?
25 / 50
Which of the following is a bilateral element?
26 / 50
A glass rod when rubbed with silk cloth is charged because__________?
27 / 50
Two D.C. shunt generators, each with armature resistance of 0.02 ohm and field resistance of 50 ohm run in parallel and supply a total current of 1000 amperes to the load circuit. If their e.m.fs. are 270 V and 265 V, their bus bar voltage will be_____________________?
28 / 50
The loads on distributors systems are generally__________________?
29 / 50
The commonly used material for shielding or screening magnetism is____________?
30 / 50
A 12 k? resistor, a 15 k? resistor, and a 22 k? resistor are in series with two 10 k? resistors that are in parallel. The source voltage is 75 V. Current through the 15 k? resistor is approximately___________?
31 / 50
An ammeter should have_____________ resistance?
32 / 50
If two charges are increased by two times then force_____________?
33 / 50
In a transistor, the base current is about_________of emitter current?
34 / 50
In an AC co-ordinate potentiometer, the currents in the phase and quadrature potentiometer are adjusted to be_____________?
35 / 50
A conductor carries 125 amperes of current under 60? to a magnetic field of 1.1 tesla. The force on the conductor will be nearly______________?
36 / 50
The chemical used in breather for transformer should have the quality of____________?
37 / 50
The power factor of a D.C. circuit is always__________?
38 / 50
Which of the following should be used for extinguishing electrical fires?
39 / 50
If the input capacitor of a transistor amplifier is short-circuited, then_________________?
40 / 50
Which of the following is the non-linearity caused by servomotor ?
41 / 50
Four resistors are connected in parallel. Fifteen mA flows through resistor R. If the second resistor is 2R, the third resistor 3R, and the fourth resistor 4R, the total current in the circuit is______________?
42 / 50
A transistor behaves as a linear device for _____________?
43 / 50
Compared to transistor, _________ have lower on state conduction losses and higher power handling capability?
44 / 50
A cable carrying alternating current has__________?
45 / 50
___________________has least range of speed control?
46 / 50
Which of the following circuit elements will oppose the change in circuit current ?
47 / 50
A VTVM has_____________input resistance than that of a multi meter?
48 / 50
Which of the following single-phase motors is suitable for timing and control purposes ?
49 / 50
A thyristor is basically________?
50 / 50
Leakage current flows through the thyristor in_________?
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