Electrical Engineering Quiz 53
1 / 50
If firing angle in an SCR circuit is increased, the output _____________?
2 / 50
The square waveform of current has following relation between r.m.s. value and average value?
3 / 50
The function of conservator in a transformer is___________________?
4 / 50
Electric force between two point charges in air or vacuum is F. If we replace air or vacuum by an insulator (dielectric) of relative permitivity Cr the force between the charges will_______________?
5 / 50
Which of the following statements regarding hysteresis motor is in incorrect?
6 / 50
The selection of an electric motor for any application depends on which of the following factors ?
7 / 50
A zener diode is________________ device?
8 / 50
Insulating materials have the function of______________?
9 / 50
The number of armature parallel paths in a two-pole D.C. generator having duplex lap winding is______________?
10 / 50
What is/are the configurable functions of each and every IOBs connected around the FPGA device from the operational point of view ?
11 / 50
Hysteresis loss least depends on____________?
12 / 50
In D.C. machines the number of slots per pole usually lies___________?
13 / 50
In a capacitor start single-phase motor, when capacitor is replaced by a resistance____________?
14 / 50
The property of a conductor due to which it passes current is called___________?
15 / 50
A star circuit has element of resistance R/2. The equivalent delta elements will be_____________?
16 / 50
Which of the following are not repayable after a stipulated period?
17 / 50
At transition temperature the value of critical field is____________?
18 / 50
A nuclear power plant is invariably used as a__________?
19 / 50
A small coil lies inside a large coil. The two coils are horizontal concentric and carry currents in opposite directions. The large coil will experience______________?
20 / 50
Electric pressure is also called________?
21 / 50
Evaporative type of condenser has___________?
22 / 50
capacitors can be used only for D.C ?
23 / 50
A no-load test is performed on a transformer to determine_______________?
24 / 50
If a square wave is fed to a differentiating circuit, the output will be _____________?
25 / 50
Resistances can be measured with the help of_______________?
26 / 50
When the load is above _______________ a synchronous motor is found to be more economical?
27 / 50
The superposition theorem requires as many circuits to be solved as there are____________?
28 / 50
Which of the following motors is preferred for tape-recorders ?
29 / 50
The material commonly used for sheaths of underground cables is______________?
30 / 50
In a full wave rectifier, the rectification ratio is approximately equal to____________?
31 / 50
____________are used for construction of core of electromagnets?
32 / 50
Which of the following cell has a. reversible chemical reaction ___________?
33 / 50
The disadvantage of base resistor method of transistor biasing is that it_________________?
34 / 50
Thermal voltage VT can be given by____________?
35 / 50
When the crystal current diode current is large, the bias is ______________?
36 / 50
For starting a D.C. motor a starter is required because___________?
37 / 50
Which of the following has the highest value of thermal conductivity ?
38 / 50
In a lead-acid battery the energy is stored in the form of___________?
39 / 50
is the property of absorbing moisture from atmosphere_____________?
40 / 50
Negative feedback in an amplifier____________?
41 / 50
A 741-Type OP-AMP has a gain-bandwith product of 1MHz. A non-inverting amplifier using this opamp & having a voltage gain of 20db will exhibit -3db bandwidth of______________?
42 / 50
When a 1.6 k? resistor and a 120? resistor are connected in parallel, the total resistance is____________?
43 / 50
In a certain common-source D-MOSFET amplifier, Vds =3.2 V r.m. and Vgs = 280 mV r.m.s. The voltage gain is_______________?
44 / 50
Zero initial condition for a system means_______________?
45 / 50
Heat control switches are used in__________________?
46 / 50
Under over voltage condition impedance offered by the voltage clamping device is__________?
47 / 50
The point of intersection of d.c. and a.c. load lines represents __________________?
48 / 50
When two ends of a circular uniform wire are joined to the terminals of a battery, the field at the center of the circle?
49 / 50
A synchronous motor develops maximum power when load angle is____________?
50 / 50
SF6 gas______________?
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