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