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