Module 3 New 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.
When a capacitor is charged after 1 time constant the V across the capacitor.
2.
In an inductive circuit, the current________ the voltage?
3.
Calculate the capacitance of a capacitor that stores 40microC of charge and has a voltage of 2V
4.
The negative plate of a discharged NiCad battery would be coated with?
5.
A 24V source is connected across a 30 Kohm resistor. In order to achieve a current flow of 6mA the resistor must be changed to
6.
An alternating current series circuit has 2 amps through a 100ohm resistor and a 173 ohm inductor. The real power is
7.
What is the resistance and tolerance value of a resistor colour coded, yellow, Violet and brown:
8.
A material with a high value of resistivity:
9.
If the time constant for a capacitor is 10us the time taken for the to reach the fully charged condition is approximately:
10.
If a length of wire is cut in half and the two halves connected in parallel the resistance is”
11.
The best shield for a steady magnetic field is a:
12.
Potassium Hydroxide is the electrolyte used in a
13.
When comparing 2 alternating current waveforms, one is at its maximum value while the other is at zero. The two waveforms are:
14.
An electromagnet of resistance 16ohm requires a current of 1.5A, the voltage required is:
15.
Wattless power is seen in:
16.
he unit which consists of two or more different types of Atoms is known as:
17.
A resistor colour coded Brown, Red, Red, Silver the value is:
18.
A current of 5A flows for 2 minutes how many coulombs passed a point in the circuit?
20.
Which among the following expressions relate charge, voltage and capacitance of a capacitor?
21.
The reciprocal of Resistance is:
22.
What is the maximum number of Electrons in the N shell of an Atom?
23.
What is the total capacitance when three capacitors, C1, C2 and C3 are connected in parallel?
24.
The electrolyte solution used in an alkaline battery is:
25.
In the diagram an unknown resistance is being measured using a Wheatstone bridge. The bridge is balanced. The unknown resistance is:
26.
What is the effective value of current?
27.
Two waveforms are 90 degrees out of phase:
28.
A transformer has 100V applied to the primary. If the ratio is 1:3 and the secondary current is 6A, the primary current will be:
29.
High torque low speed is given by:
31.
In a lead acid cell, there are:
32.
A synchronous ac motor is most useful for applications requiring:
33.
The capacity of a cell can be increased by:
34.
Three capacitors of value 4uF, 6uF and 12uF are connected in parallel. The total circuit capacitance is:
35.
An AC motor which rotates at the same speed as supply frequency is called:
36.
In a thermocouple, the EMF is produced by:
37.
Two 10V 20AH batteries are connected in parallel and connected across a 10Ω load. How long could they supply the required load current before the voltage began to decay?
39.
Strength of the electric field is
40.
The two factors which govern the output frequency of an AC generator are the:
41.
In a high pass filter the:
42.
When making up electrolyte for lead acid batteries:
43.
The charge time of a capacitor of value 3 uF connected in series with a resistor of value 5 kohm is:
44.
For very low frequencies, capacitor acts as
45.
Which of the following is a passive device?
46.
In the diagram below, points X and Y are respectively:
47.
In a wire wound resistor the length of wire is increased by four times and its cross sectional area is doubled. The resistance value is effectively:
48.
For high frequencies, capacitor acts as
49.
Three resistors of equal value connected in parallel in a circuit. If one of the resistors becomes an open circuit, the current through the circuit will:
50.
The filament of a lamp measures 2.5ohm when cold. With 120 volts applied across the filament, the lamp dissipates 60 Watts. What is the hot resistance of the lamp?
51.
What is the effect of reversing the supply to the field and armature of a direct current motor?