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