# Module 3

Module 3 quiz contains 52 question based on the syllabus for module 3 examination for B1.1, B1.3 and B2 category.

The time limit for the quiz is 65 min.

The number of attempts allowed are unlimited.

All the best.

1.
Wave and Lap windings are designed to give:

2.
In a magnetic circuit:

3.
The current in a circuit is 6 amps the amount of charge moved in 25 seconds is:

4.
A capacitor consists of

5.
When making up electrolyte for lead acid batteries:

6.
An eight pole generator rotates at 6,000 RPM. The frequency produced is:

7.
One unit of Potential Difference is:

8.
In order to produce a substantial voltage and current from photovoltaic cells they should be connected in:

9.
5 amps passes through a 4 ohm resistor, the amount of power the resistor has to dissipate is:

10.
Find the current in the circuit

11.
Diamagnetic materials have a permeability of:

12.
In an inductive circuit, the current________ the voltage?

13.
A 10 centimeter rod of specific resistance 0.5 and a cross sectional area of 1 centimeter, has a resistive value of:

14.
Friction can induce electrostatic charge of very:

15.
Connecting two 28volt 60 Amp/Hour batteries in parallel will produce:

16.
A potentiometer is a:

17.
An alternating current voltage waveform has a root mean square value of 70.7 volts the peak voltage is:

18.
Which among the following expressions relate charge, voltage and capacitance of a capacitor?

19.
A coil has an inductance of 8 mH with 125 turns. When the number of turns is doubled within the same length, the inductance will become:

20.
Some materials emit electrons to a light source. These are:

21.
An electromagnet of resistance 16ohm requires a current of 1.5A, the voltage required is:

22.
If 2V is supplied to a 3F capacitor, calculate the charge stored in the capacitor

23.
If four Identical cells of 2.2 volt and 15 amp/hour (A/H) capacity are connected in series the voltage and A/H will be:

24.
In shaded pole induction motor if the supply current is reversed the motor will:

25.
Which of the following is a passive device?

26.
If there are two bulbs connected in series and one blows out, what happens to the other bulb?

27.

28.
Calculate the time constant of a series RC circuit consisting of a 100microF capacitor in series with a 100ohm resistor.

29.
The point of coercivity occurs when the:

30.
A 12V battery has an internal resistance of 0.2 ohm. With a 5A load current flowing what is the potential difference of the battery?

31.
If the output of a generator drops from 100V with zero current flowing to 80V with 2A flowing then the internal resistance is:

32.
When capacitors are connected in parallel, what happens to the effective plate area?

33.
The two factors which govern the output frequency of an AC generator are the:

34.
The most common form of primary cell is:

35.
What is the value of capacitance of a capacitor which has a voltage of 4V and ha 8C of charge?

36.
The power factor of an alternating current circuit is:

37.
When two resistors are connected in series:

38.
The voltage rating on a capacitor is the:

39.
Capacitor is a device used to

40.
The generator characteristic of:

41.
When a circuit contains both a resistor and an inductor a phase angle is developed between current and voltage, such that:

42.
The Electron Valence of an Element with 5 electrons is:

43.
Calculate the MMF (Magneto Motive Force) of a coil with 2000 turns and a 5mA current:

44.
If an EMF (Electromotive Force) of 120V is applied to a circuit of three equal value resistors in series and a current of 2A flows, the value of total resistance is:

45.
If in an alternating current circuit, impedance is 26 ohm, capacitive reactance is 24 ohm, what is the resistance?

46.
In a lead acid cell, there are:

47.
If a pure capacitance and a pure inductance of equal reactance are in series the supply current is:

48.
A battery of 18V with an internal resistance of 1.5Ω is connected in a circuit with three resistors in parallel of values 6Ω, 12Ω and 12Ω. The total circuit resistance is:

49.
RMS stands for

50.
A component is required to give a negative temperature coefficient value. It is likely to be made of:

51.
The retentivity of a material is given by

52.
In the Diagram the two unknown resistors are of equal value and their value is: