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