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