Electrical Engineering Quiz 22
1 / 50
Hybrid means_____________?
2 / 50
In aluminium conductors, steel core is provided to____________?
3 / 50
Acharge which when placed in vacuum from an equal and similar charge repels with a force of 9 x 10 N, is known as_____________?
4 / 50
The unit of dielectric strength is given by___________?
5 / 50
A parallel resonant band-pass filter consists of a 6.8 ? resistor in series with a parallel network made up of an 8 ?H coil and a 120 pF capacitor. The output is taken across the capacitor/coil. Assume RW = 0 ?. What is the center frequency of the filter?
6 / 50
Which of the following materials is used in the manufacture of resistance grids to be used in the starters of large motors ?
7 / 50
The common impurity in the electrolyte of lead-acid battery is_____________?
8 / 50
technique gives quick transient and stability response______________?
9 / 50
Power factor of the following circuit will be unity
10 / 50
For the same peak value, which of the following wave has the least mean value ?
11 / 50
The electric field intensity at a point situated 4 meters from a point charge is 200 N/C If the distance is reduced to 2 meters, the field intensity will be______________?
12 / 50
The dissipation factor of a good dielectric is of the order of____________?
13 / 50
If the energy is supplied from a source, whose resistance is 1 ohm, to a load of 100 ohms the source will be___________?
14 / 50
The function of pole shoes in the case of D.C. machine is______________?
15 / 50
With three resistances connected in parallel, if each dissipates 20 W the total power supplied by the voltage source equals_____________?
16 / 50
Battery operated trucks are used in________________?
17 / 50
Reduced voltage starter can be used with_____________?
18 / 50
If the load current drawn by unregulated power supply increases, the d.c. output voltage______________?
19 / 50
Three point starter can be used for______________?
20 / 50
A permeable substance is one_____________?
21 / 50
The Q of an LC circuit is given by _________________?
22 / 50
Which of the following is the essential requirement of peak load plant ?
23 / 50
The circuit has resistors, capacitors and semi-conductor diodes. The circuit will be known as___________?
24 / 50
In a multivibrator, we have___________ feedback?
25 / 50
Is a cable is to be designed for use on 1000 kV, which insulation would you prefer ____________?
26 / 50
A transistor converts __________________?
27 / 50
The potential gradient across the material of low permittivity is than across the material of high permittivity?
28 / 50
A coil induces 350 mV when the current changes at the rate of 1 A/s. The value of inductance is___________?
29 / 50
___________From which of the following transfer function can be obtained ?
30 / 50
Generators for peak load plants are usually designed for maximum efficiency at____________?
31 / 50
For measuring a very high resistance we should use_______________?
32 / 50
The concept on which Superposition theorem is based on_____________?
33 / 50
Insertion of resistance in the stator of an induction motor___________?
34 / 50
Which of the following affect greatly the resistivity of electrical conductors ?
35 / 50
The parallel combination of a 470 ? resistor and a 1.5 k? resistor is in series with the parallel combination of five 1 k? resistors. The source voltage is 50 V. The percentage of the load current through any single 1 K? resistor is__________?
36 / 50
In the case of lap winding resultant pitch is____________?
37 / 50
Selenium is __________ semiconductor?
38 / 50
Which of the following circuit component opposes the change in the circuit voltage ?
39 / 50
Economisers improve boiler efficiency by__________?
40 / 50
A heat sink is generally used with a transistor to______________?
41 / 50
A 6 V battery output is divided down to obtain two output voltages. Three 2.2 k? resistors are used to provide the two taps. The two output voltages are___________?
42 / 50
When /?2 is the rotor resistance, .X2 the rotor reactance at supply frequency and s the slip, then the condition for maximum torque under running conditions will be_____________?
43 / 50
In a three phase converter, the number of notches per cycle is____________?
44 / 50
Electric field intensity is a quantity_____________?
45 / 50
In an intrinsic semiconductor, the number of free electrons_____________?
46 / 50
Which of the following motors is usually used in house-hold refrigerators ?
47 / 50
Which is of the following data is required to draw the circle diagram for an induction motor ?
48 / 50
1 db corresponds to_____________change in power level?
49 / 50
Slip-rings in a synchronous motor carry____________?
50 / 50
The resistance LM will be____________?
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