Electrical Engineering Quiz 20
1 / 50
The effect of corona can be detected by___________?
2 / 50
In BJT, switching losses occurs___________?
3 / 50
The input impedance of a MOSFET is of the order of______________?
4 / 50
A perfect conductor has_____________?
5 / 50
Electric flux due to a point charge +q is______________?
6 / 50
In a circuit containing R, L and C, power loss can take place in____________?
7 / 50
When electric current passes through a metallic conductor, its temperature rises. This is due to__________?
8 / 50
Transistor biasing is done to keep _____________in the circuit?
9 / 50
If the arrow of crystal diode symbol is positive w.r.t. bar, then diode is _____________biased?
10 / 50
__________ industry has the least power consumption per ton of product?
11 / 50
Thermonic emission occurs in______________?
12 / 50
The period of a wave is___________?
13 / 50
Application of Norton?s theorem to a circuit yields:________________?
14 / 50
The two input terminals of an opamp are labeled as______________?
15 / 50
A parallel resonant band-pass filter consists of a 90 ? resistor in series with a parallel network made up of a 60 mH coil and a 0.02 ?F capacitor. The output is taken across the capacitor/coil. The coil winding has a resistance of 20 ?. What is the center frequency of the filter?
16 / 50
A reluctance motor____________?
17 / 50
In a three-phase supply floating neutral is undesirable because it way give rise to___________?
18 / 50
The most popular types of ICs are _________________?
19 / 50
In a lead-acid cell, lead is called as____________?
20 / 50
The speed regulation of a synchronous motor is always___________?
21 / 50
Mercury as an electric contact material is_______________?
22 / 50
The purpose of retardation test on D.C. shunt machines is to find out____________?
23 / 50
In liquid level and electrical system analogy, voltage is considered analogous to_____________?
24 / 50
Heat transfer by condition will not occur when____________?
25 / 50
In the breakdown region, a zener didoe behaves like a _______________source?
26 / 50
A direct current can be measured by________________?
27 / 50
Which of the following power plants need the least period for installation ?
28 / 50
A synchronous motor is running with normal excitation. When the load is increased, the armature current drawn by it increases because
29 / 50
D.C. series motors are used______________?
30 / 50
Nichrome wire is an alloy of_____________?
31 / 50
The output impedance of an emitter follower is______________?
32 / 50
A single core cable used on 33000 V has conductor diameter 10 mm and the internal diameter of sheath 25 mm. The maximum electrostatic stress in the cable is____________?
33 / 50
Class _____________ operation gives the maximum distortion?
34 / 50
Commonly used instruments in power system measurement are_______________?
35 / 50
Steam turbines are governed by the following methods_____________?
36 / 50
Paper condenser is___________?
37 / 50
Which of the following factors affect resistivity of metals ?
38 / 50
The minimum armature current of the synchronous motor corresponds to operation at______________?
39 / 50
The leakage current in CE arrangement is____________that in CB arrangement?
40 / 50
Insertion of resistance in the rotor of an induction motor to develop a given torque?
41 / 50
The ear is not sensitive to___________?
42 / 50
The signal generator generally used in the laboratories is___________oscillator?
43 / 50
The rotor of an induction motor runs at__________?
44 / 50
The household energy meter is_______________?
45 / 50
It becomes more difficult to remove_________________?
46 / 50
The standard full-load power factor ratings for synchronous motors are___________?
47 / 50
When a transistor is used as an amplifier, it is operated in the _____________ region?
48 / 50
Blowing down of boiler water is the process_____________?
49 / 50
A network which contains one or more than one source of e.m.f. is known as___________?
50 / 50
Three 47 ? resistors are connected in parallel across a 110 volt source. The current drawn from the source is approximately_______________?
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