Electricity
Test Your Knowledge of Electricity!
Put your knowledge of electrical concepts to the test with our comprehensive quiz on electricity. Designed for enthusiasts and professionals alike, this quiz covers essential topics including alternating current, resistance, reactance, and circuit design.
Challenge yourself with questions like:
- What is the maximum instantaneous value of voltage?
- How do you calculate the RMS current?
- What is the relationship between reactance and impedance?
The variation of a quantity such as voltage or current shown on a graph is known as
Waveform
Peak value
Instantaneous value
Period
What is the duration of one cycle known as
Waveform
Peak value
Instantaneous value
Period
The value of a given waveform at any instant time is termed as
Waveform
Instantaneous value
Cycle
Period
The maximum instantaneous value measured from zero value is known as?
Peak value
Peak to peak value
Cycle
Period
If maximum value of current is 5√2 A, what will be the value of RMS current?
10
5
15
25
What is the correct expression for the rms value of current?
Irms=Im/2
Irms=Im/√2
Irms=Im/4
Irms=Im
Find the value of the instantaneous voltage if the resistance is 2 ohm and the instantaneous current in the circuit is 5A.
5
2
10
2.5
Calculate the resistance in the circuit if the rms voltage is 20V and the rms current is 2A.
2
5
10
20
The correct expression for the instantaneous current in a resistive circuit is
i=Vm(sint)/R
i=Vm(cost)/R
I=V(sint)/R
I=V(cost)/R
Inductance is _____________________ to number of turns in the coil
Directly proportional
Inversely proportional
Equal
Not related
What is the relation between reactance, resistance and impedance?
Z=R+jX
Z=R+X
Z=R-X
Z=R-jX
What is the real part of the impedance of RLC circuit?
Resistance
Conductance
Admittance
Reactance
If in an alternating current circuit, capacitance of 30 µF is connected to a supply of 200V,50Hz. Find the effective value of the current in the circuit.
1.38
1.89
1.74
0.89
If in an alternating current circuit, capacitance C is connected to a supply of 200V,50Hz. Current in the circuit is 1.89 A. Find the capacitance C.
30
20
10
15
In ac circuit, resistance 5 ohm is connected with capacitor having capacitive reactance 12 ohm. Supply of 260 V is connected to the circuit. Calculate the current in the circuit.
40
10
20
30
In ac circuit, resistance 5 ohm is connected with a capacitor having capacitive reactance 12 ohm. Supply of 260 V is connected to the circuit. Calculate the voltage across a capacitor.
300
200
240
100
In an RLC circuit, the power factor is always ____________
Positive
Negative
Depends on the circuit
Zero
Which of the following is not ac waveform?
Sinusoidal
square
Constant
Triangular
What is not a frequency for ac current?
50
55
0
60
What value of direct current must flow through a resistor to produce the same heating power as an alternating current with a peak value of 3.5 A?
1.5
2.5
3.5
4.5
In an AC circuit, resistance 50 Ω, inductance 0.3 H and capacitance 15 μF is connected to an AC voltage source 25 V, 50 Hz. Determine the current in the circuit
0.01
0.2
0.02
0.002
In an AC circuit, resistance 50 Ω, inductance 0.3 H and capacitance 15 μF is connected to an AC voltage source 25 V, 50 Hz. Determine the impedance in the circuit.
110
100
125
140
In an AC circuit, resistance 50 Ω, inductance 0.3 H and capacitance 15 μF is connected to an AC voltage source 25 V, 50 Hz. Determine the capacitive reactance in the circuit.
316
195
124
212.21
In an AC circuit, resistance 50 Ω, inductance 0.3 H and capacitance 15 μF is connected to an AC voltage source 25 V, 50 Hz. Determine the inductive reactance in the circuit.
36
94.25
125
140
In a parallel circuit, with any number of impedances, The voltage across each impedance is?
Equal
Divided equally
Divided proportionally
Zero
In a series circuit, with any number of impedances, The voltage across each impedance is?
Equal
Divided equally
Divided proportionally
Zero
In a parallel circuit, current in each impedance is_____________
Equal
Different
Zero
Infinite
In a series circuit, current in each impedance is_____________
Equal
Different
Zero
Infinite
If the impedance of a system is 4 ohm, calculate its admittance
0.25
4
25
0.4
The admittance of a system is 10 S, calculate its impedance.
10
0.1
1
1.1
Which, among the following is the correct expression for impedance?
Z=Y
Z=1/Y
Z=Y^2
Z=1/Y^2
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