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