Electrical Engineering Quiz 2
1 / 50
The forward voltage drop across a silicon diode is about _______________?
2 / 50
In a npn transistor,_____________are the minority carriers?
3 / 50
In a radio receiver, we generally use ????.. oscillator as a local oscillator
4 / 50
A cumulatively compounded long shunt generator when operating as a motor would be____________?
5 / 50
When the initial conditions of a system are specified to be zero it implies that the system is________________?
6 / 50
During the charging of a lead-acid cell__________?
7 / 50
The value of the capacitance depends upon the________________?
8 / 50
The ability of charged bodies to exert force on 6ne another is attributed to the existence of____________?
9 / 50
The working of a synchronous motor is similar to_____________?
10 / 50
Silicon controlled rectifier can be turned on____________?
11 / 50
In a TRF radio receiver, the RF and detection stages are tuned to______________?
12 / 50
The torque of an induction motor is___________?
13 / 50
Series reactors should have________________?
14 / 50
When an input signal 1 is applied to a NOT gate, the output is ______________?
15 / 50
The effect of considering friction in steam nozzles for the same pressure ratio leads to_________?
16 / 50
Which of the following uses electric energy and does not convert it into any other form ?
17 / 50
18 / 50
Which of the following is exhibited by Root locus diagrams ?
19 / 50
In repulsion motor, maximum torque is developed when____________?
20 / 50
To protect most of the electrical equipment handling low power, the types of relays used are______________?
21 / 50
In case of a double cage induction motor, the inner cage has__________?
22 / 50
The only function of NOT gate is to__________________?
23 / 50
A Triac has three terminals viz ___________?
24 / 50
Two similar 15 V Zeners are connected in series. What is the regulated output voltage ?
25 / 50
The process of heat transfer during the reentry of satellites and missiles, at very high speeds, into earth?s atmosphere is known as_______________?
26 / 50
The transformer ratings are usually expressed in terms of______________?
27 / 50
If the firing angle becomes negative, then the rectifier begins to work as_______________?
28 / 50
MOSFET stands for______________?
29 / 50
The magnetising current of a transformer is usually small because it has___________?
30 / 50
In a synchronous motor, damper windings are provided on____________?
31 / 50
The motor used for the compressors is____________?
32 / 50
The terminal voltage of a D.C. shunt generator drops on load because of all of the following reasons except:_____________?
33 / 50
_____________is the reference input minus the primary feedback?
34 / 50
In the d.c. equivalent circuit of a transistor amplifier, the capacitors are considered__________________?
35 / 50
In a 3-phase, 4-pole, 50 Hz synchronous motor, the frequency, pole number and load torque all are halved. The motor speed will be____________?
36 / 50
Over modulation results in ______________?
37 / 50
In a capacitor, the electric charge is stored in_________?
38 / 50
For high efficiency of transfer of power, internal resistance of the source should be____________?
39 / 50
A dynamo converts______________?
40 / 50
Edward?s air pump____________?
41 / 50
The good power factor of an induction motor can be achieved if the average flux density in the air gap is___________?
42 / 50
A power supply which has voltage regulation of ____________ is unregulated power supply?
43 / 50
If the value of a is 0.9, then value of ? is___________?
44 / 50
The efficiency of a modern boiler using coal and heat recovery equipment is about_____________?
45 / 50
The capacitance of reversed bised junction J2 in a thyristor is CJ2 = 20 pF and can be assumed to be independant of the off state voltage. The limiting value of the charging current to turn on the thyristor is 16 m What is the critical value of dv/dt?
46 / 50
The usual values of maximum flux densities for distribution transformers using hot rolled silicon steel are______________?
47 / 50
The common-mode gain is ________________?
48 / 50
The magneto-motive force is______________?
49 / 50
Thevenin resistance Rth is found
50 / 50
A Wien bridge oscillator uses___________feedback?
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