Electrical Engineering Quiz 23
1 / 50
In a mercury arc rectifier, the anode is usually made of_____________?
2 / 50
Which of the following properties is not necessarily desirable for the material for transformer core ?
3 / 50
Which of the following statement is true both for a series and a parallel circuit?
4 / 50
The size of an excavator is usually expressed in terms of_________________?
5 / 50
Which of the following statements regarding an idel single-phase transformer having a turn ratio of 1 : 2 and drawing a current of 10 A from 200 V A.C. supply is incorrect?
6 / 50
Carbon electrodes are not used in_______________?
7 / 50
The resistivity of pure germanium under standard conditions is about_______________?
8 / 50
Non inductive resistances are used in decreasing______________?
9 / 50
In a full-wave rectifier using two ideal diodes,Vdc & Vm are the dc & peak values of the voltage respectively across a resistive load. If PIV is the peak inverse voltage of the diode, then the appropriate relationships for this rectifier is____________?
10 / 50
Flame proof motors are used in_________________?
11 / 50
All the rules and laws of D.C. circuit also apply to A.C. circuit containing_____________?
12 / 50
The first goal to accomplish in analyzing a complex series-parallel circuit is to____________?
13 / 50
The starting torque of a squirrel-cage induction motor is___________?
14 / 50
Under harmonic free load voltages, the 3 phase VSI_____________?
15 / 50
A VTVM is never used to measure ______________?
16 / 50
The units of volume charge density are___________?
17 / 50
The overall efficiency of thermal power plant is equal to____________?
18 / 50
Choose the incorrect statement: A branch formed by the parallel connection???
19 / 50
The rate of acceleration on suburban orurban service is in the range_________________?
20 / 50
In an op-amp differentiator:________________?
21 / 50
In the above question (Q38.) , what is the collector voltage ?
22 / 50
?Any number of current sources in parallel may be replaced by a single current source whose current is the algebraic sum of individual source currents and source resistance is the parallel combination of individual source resistances?. This statement is associated with:
23 / 50
Kirchhoff s current law states that
24 / 50
Another name for Zener diode is ______________diode?
25 / 50
If a transistor is operated in such a way that output current flows for 60o of the input signal, then it is ______________ operation?
26 / 50
The wooden poles well impregnated with creosite oil or any preservative compound have life_____________?
27 / 50
The operating voltage of high voltage cables is up to_______________?
28 / 50
In TV transmission, picture signal is ______________ modulated?
29 / 50
Double fourier series analysis of PWM is_____________?
30 / 50
The power factor of industrial loads is generally______________?
31 / 50
Which of the following capacitors will have the least value of breakdown voltage________ ?
32 / 50
Stepless speed control of induction motor is possible by which of the following methods ?
33 / 50
A step ? down choppers can be used in___________?
34 / 50
To measure a resistance with the help of a potentiometer it is_________________?
35 / 50
_________________method of starting a three phase induction motor needs six terminals ?
36 / 50
The value of the reheat factor is of the order of_____________?
37 / 50
When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will___________?
38 / 50
A D.C. generator works on the principle of____________?
39 / 50
The number 1000 would appear just immediately after__________________?
40 / 50
If biasing is not done in an amplifier circuit, it results in________________?
41 / 50
Thyristor can be protected from over voltages by using
42 / 50
A schrage motor can run on___________?
43 / 50
Annual instalment towards depreciation reduces as rate of interest increases with______________?
44 / 50
For bidirectional operation of converters____________?
45 / 50
For an ideal op-amp, which of the following is true?
46 / 50
The size of poxvirus is_______________?
47 / 50
An important advantage of a synchronous motor over wound round induction motor is that
48 / 50
If mica sheet is placed between the plates of a capacitor the capacity_______________?
49 / 50
The load cycle for a motor driving a power press will be________________?
50 / 50
For highest power gain, one would use _________________configuration?
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