Electrical Engineering Quiz 30
1 / 50
An RL high-pass filter consists of a 470 ? resistor and a 600 mH coil. The output is taken across the coil. The circuit?s critical frequency is___________?
2 / 50
At series resonance, the phase angle between applied voltage and circuit is______________?
3 / 50
A zener diode is destroyed if it______________?
4 / 50
How many op-amps are required to implement this equationop-amps?
5 / 50
In transmission lines the cross-arms are made of________________?
6 / 50
No-load on a transformer is carried out to determine______________?
7 / 50
In a D.C. generator the critical resistance refers to the resistance of_____________?
8 / 50
Battery charging equipment is generally installed______________?
9 / 50
The complete circle diagram of induetion motor can be drawn with the help of data found from__________?
10 / 50
CC configuration is used for impedance matching because its ________________?
11 / 50
The capacitance C is charged through a resistance R. The time constant of the charging circuit is given by__________?
12 / 50
___________ brushes are fragile and cause excessive wear of commutator?
13 / 50
A non-linear network does not satisfy__________?
14 / 50
Specific energy consumption is least in ________________ service?
15 / 50
In a manual shunt motor starter?
16 / 50
Petroleum jelly is applied to the electrical connections to the lead-acid battery___________?
17 / 50
The stator of a D.C. machine comprises of_____________?
18 / 50
Selenium rectifier can be operated at temperatures as high as____________?
19 / 50
The internal resistance of an alkali cell is nearly _________ times that of the lead-acid cell
20 / 50
Delta/star transformer works satisfactorily when______________?
21 / 50
If the field of a D.C. shunt motor gets opened while motor is running______________?
22 / 50
In current commutated DC-DC choppers, the voltage spike appears across the load when_____________?
23 / 50
____________technique is not applicable to nonlinear system ?
24 / 50
Which is the best conductor of electricity _______________?
25 / 50
Dynamic equalizing circuit is used for________________?
26 / 50
Two resistors are said to be connected in series when___________?
27 / 50
Maximum di / dt in a SCR is________?
28 / 50
A dead storage battery can be revived by___________?
29 / 50
A phase lag lead network introduces in the output_______________?
30 / 50
Which of the following material has least value of dielectric constant ?
31 / 50
D.C. generators are installed near the load centres to reduce_____________?
32 / 50
The gate of a JFET is ___________ biased?
33 / 50
Which of the following equipment, for regulating the voltage in distribution feeder, will be most economical?
34 / 50
Spacers are provided between adjacent coils?
35 / 50
The voltage appearing across the contacts after opening of the circuit breaker is called__________voltage
36 / 50
In an AM wave, the majority of the power is in _____________?
37 / 50
In the cables, sheaths are used to___________?
38 / 50
_______________watt-hours per tonne km is usually the specific energy consumption for suburban services?
39 / 50
Which of the following statements pertains to resistors only _____________?
40 / 50
The electric lines of force are____________?
41 / 50
Which of the following property is not necessarily desirable in the material for transformer core ?
42 / 50
________________ frequency is not common in low frequency traction system?
43 / 50
Which of the following materials is preferred for transmitting electrical energy over long distance ?
44 / 50
For given applied voltage, with the increase in frequency of the applied voltage?
45 / 50
The MOSFET switch in its on-state may be considered equivalent to_____________?
46 / 50
Which of the following insulating materials can withstand the highest temperature safely ?
47 / 50
In the depletion region of a pn junction, there is a shortage of_________________?
48 / 50
Digital circuit can be made by the repeated use of________________?
49 / 50
Permittivity is expressed in_____________?
50 / 50
The running winding of a single phase motor on testing with meggar is found to be ground. Most probable location of the ground will be___________?
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