Electrical Engineering Quiz 44
1 / 50
Demodulation is done in ________________?
2 / 50
Long distance transmission is easy for________________?
3 / 50
The effective channel length of a MOSFET in a saturation decreases with increase in___________?
4 / 50
A car is raining at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?
5 / 50
If a single phase induction motor runs slower than normal, the most likely defect is_____________?
6 / 50
The push-pull circuit must use ______________ operation?
7 / 50
The switch board instruments________________?
8 / 50
Which of the following materials is used for making coils of standard resistances ?
9 / 50
The force per unit charge is know as__________________?
10 / 50
The ideal load factor should be_____________?
11 / 50
In the double tuned circuit, if the mutual inductance between the two tuned circuits is decreased, the level of resonance curve ___________________?
12 / 50
In the differential voltage gain & the common mode voltage gain of a differential amplifier are 48db &2db respectively, then its common mode rejection ratio is__________?
13 / 50
Heat is transferred simultaneously by condition, convection and radiation_____________?
14 / 50
The magnitude of the induced e.m.f. in a conductor depends on the______________?
15 / 50
Minimum voltage regulation occurs when the power factor of the load is_____________?
16 / 50
A pure capacitor connected across an A.C. voltage consumed 50 W. This is due to________?
17 / 50
An RL low-pass filter consists of a 5.6 mH coil and a 3.3 k? resistor. The output voltage is taken across the resistor. The circuit?s critical frequency is______________?
18 / 50
If variable part of annual cost on account of interest and depreciation on the capital outlay is equal to the annual cost of electrical energy wasted in the conductors, the total annual cost will be minimum and the corresponding size of conductor will be most economical. This statement is known as___________________?
19 / 50
Which of the following is a ferromagnetic material ?
20 / 50
When drain voltage equals the pinch-off-voltage, then drain current ___________ with the increase in drain voltage?
21 / 50
Direct conversion of heat into electric power is possible through__________?
22 / 50
The frequency and time domain are related through which of the following ?
23 / 50
In an AM wave useful power is carrier by ______________?
24 / 50
Emitter follower is used for ________________?
25 / 50
In an unregulated power supply, if input a.c. voltage increases, the output voltage _______________?
26 / 50
The output transformer used in a power amplifier is a _____________ transformer?
27 / 50
Which of the followings is/are active element?
28 / 50
In an automatic control system which of the following elements is not used ?
29 / 50
Spark plug makes use of which of the following materials for insulation ?
30 / 50
The total deficiency or excess of electrons in a body is known as____________?
31 / 50
Magnetic compass needle will be deflecting if it is kept near________________?
32 / 50
A monostable vibrator has_____________
33 / 50
The current drawn by the armature of D.C. motor is directly proportional to__________?
34 / 50
Gate circuit or triggering circuit of a thyristor is
35 / 50
If gate current is increased, then anode-cathode voltage at which SCR closes_________________?
36 / 50
Calculate the cutoff frequency of a first-order low-pass filter for R1 = 2.5k? and C1 = 0.05?F___________?
37 / 50
The path of a magnetic flux in a transformer should have______________?
38 / 50
If the negative potential on the control grid of CRT is increased, the intensity of spot _____________?
39 / 50
Voltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant ________?
40 / 50
Regenerative feedback implies feedback with_______________?
41 / 50
An induction motor has relatively high power factor at__________?
42 / 50
For the parallel operation of two or more D.C. compound generators, we should ensure that_______________?
43 / 50
In a series L-C circuit at the resonant frequency the__________?
44 / 50
The base resistor method is generally used in ________________?
45 / 50
The changes in volume of transformer cooling oil due to variation of atmospheric temperature during day and night is taken care of by which part of transformer?
46 / 50
When the transistor (CE arrangement) is in the cut off region, the collector current is ______________?
47 / 50
If a third equal and similar charge is placed between two equal and similar charges, then this third charge will_____________?
48 / 50
The closed-loop voltage gain of an inverting amplifier equal to______________?
49 / 50
A Zener diode______________?
50 / 50
A dynamometer wattmeter can be used for______________?
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