Electrical Engineering Quiz 55
1 / 50
The transfer function technique is considered as inadequate under which of the following conditions ?
2 / 50
The phase difference between the input and output voltages in a common base arrangement is___________?
3 / 50
The collector of a transistor is____________doped?
4 / 50
Which of the following statements regarding two value capacitor motor is incorrect ?
5 / 50
For a particular material the Hall coefficient was found to be zero. The material is______________?
6 / 50
Which generator would you prefer for feeding long D.C. transmission lines ?
7 / 50
Which of the following is likely to have the largest resistance ?
8 / 50
SCR will be turned off when anode current is_______________?
9 / 50
Which of the following devices has the highest input impedance ?
10 / 50
The isentropic expansion of steam through nozzle for the steam initially dry saturated at inlet is approximated by equation?
11 / 50
The capacitor preferred for high frequency circuits is_____________?
12 / 50
5 H.P., 50-Hz, 3-phase, 440 V, induction motors are available for the following r.p.m. Which motor will be the costliest ?
13 / 50
Besides a method of trial and error, which of the following methods is employed for solution of network problems in interconnected system ?
14 / 50
What is the magnitude and the direction of force per 1.1m length of a pair of conductors of a direct current linecarrying 10 amperes and spaced 100 mm apart ?
15 / 50
The charge required to liberate one gram equivalent of any substance is known as _________ constant
16 / 50
For 275 kV transformers, using cold rolled grain oriented steel, which of the following values of flux density may be used?
17 / 50
The IGBT resulted in higher switching speed and lower energy losses. It can be used for___________?
18 / 50
For open control system which of the following statements is incorrect ?
19 / 50
A Zener voltage regulator is used for ____________ load currents?
20 / 50
In _________ fuel transportation cost is least.
21 / 50
Which of the following statements regarding repulsion-start induction motor is incorrect ?
22 / 50
The surge phenomenon is particularly important in case of_______________?
23 / 50
The control element of an SCR is ______________?
24 / 50
The phase difference between voltage and current wave through a circuit element is given as 30?. The essential condition is that
25 / 50
What will be the current passing through the ring shaped air cored coil when number of turns is 800 and ampere turns are 3200 ?
26 / 50
Class AB operation is often used in power large signal amplifiers in order to_________?
27 / 50
Carbon bearings are used under which of the following conditions ?
28 / 50
Voltage dependent resistors are usually made from________________?
29 / 50
Which of the following variety of copper has the best conductivity ?
30 / 50
The condition for the validity under Ohm?s law is that_______________?
31 / 50
For a frequency of 200 Hz, the time period will be__________?
32 / 50
In the above question, what is the power in sidebands?
33 / 50
The path of the magnetic flux in transformer should have____________?
34 / 50
Which of the following load normally needs starting torque more than the rated torque?
35 / 50
Power transformers are designed to have maximum efficiency at___________?
36 / 50
is used for heating non-conducting materials?
37 / 50
Hydrogen has a heat transfer co-efficient __________ times that of air?
38 / 50
The collector-base junction in a transistor has___________?
39 / 50
In mercury arc rectifiers having grid, the arc can be struck between anode and cathode only when the grid attains a certain potential, this potential being known as______________?
40 / 50
The bandwidth of an RF tuned amplifier is dependent on____________?
41 / 50
The minority carrier concentration is largely a function of_____________?
42 / 50
The ignited or auxiliary anode in mercury arc rectifier is made of____________?
43 / 50
The gain of an amplifier with feedback is known as____________gain?
44 / 50
In which of the following equipment direct current is needed ?
45 / 50
For making a capacitor, it is better to select a dielectric having___________?
46 / 50
Which of the following losses are significantly reduced by laminating the core of a D.C. generator ?
47 / 50
The presence of ozone due to corona is harmful because it________________?
48 / 50
In an open loop control system____________?
49 / 50
One would find a clamping circuit in ___________________?
50 / 50
Which of the following is the poorest conductor of electricity ?
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