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The following symbol is used for:

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NHPC JE Electrical 5 April 2022 (Shift 1) Official Paper
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  1. Impedance
  2. Inductance
  3. Capacitance
  4. Resistance

Answer (Detailed Solution Below)

Option 1 : Impedance
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Detailed Solution

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Symbol Used in Electric Network:

1. Resistance:

2. Inductance:

3. Capacitance:

4. Impedance:

5. Voltage Source:

6. Current Source:

7. Controlled Voltage Source:

8. Controlled Current Source:

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Exams Tests Super Practice

More Impedance Questions

Q1.An inductor having an inductance of 0.4 H and a resistance of 5 Ω is connected in series with a capacitor across 50 Hz sinusoidal supply. Calculate the capacitance required to give the circuit a power factor of 0.5 lagging.
Q2.A current i = 10 sin \(\left( 300 t-\frac{3\pi}{8} \right)\) is produced when a voltage V = 30 sin 300 t is applied to a circuit. The estimated value of impedance is : 
Q3.The reactance offered by a capacitor to alternating current of frequency ‘f’ is 10 ohm. If the frequency is made to operate at ‘2f’, then the reactance becomes equal to ______ .
Q4.An inductor having an inductance of 0.14 H and a resistance of 6 Ω is connected in series with a capacitor across 50 Hz Supply. Calculate the capacitive reactance required to give the circuit power factor 0.6 lagging. Assume supply voltage to be sinusoidal. 
Q5.In a pure inductive circuit if the supply frequency is reduced to 1/10th of the previous value, the current will be:
Q6.The total opposition offered by a RL series circuit is called as:
Q7.If the load impedance is 20 - j20, the power factor is -
Q8.Calculate the impedance (in Ohms) if the inductive reactance is 200 Ohms and resistance is 200 Ohms.
Q9.Calculate the total impedance for a circuit having the following values: Resistance = 5 Ω Inductance reactance = 20 Ω Capacitance reactance = 8 Ω
Q10.The following symbol is used for:

More Network Synthesis Questions

Q1.Which of the following statements is NOT correct regarding the vector method in AC circuit analysis?
Q2.30 J energy is required to move 6 C charge from point 'a' to point 'b'. The voltage drop Vab will be equal to __________.
Q3.Admittance is a reciprocal of:
Q4.The admittance of an electric circuit is represented by Y = (3 + j4). What is the value of resistance in this circuit? 
Q5.An inductor having an inductance of 0.4 H and a resistance of 5 Ω is connected in series with a capacitor across 50 Hz sinusoidal supply. Calculate the capacitance required to give the circuit a power factor of 0.5 lagging.
Q6.A current i = 10 sin \(\left( 300 t-\frac{3\pi}{8} \right)\) is produced when a voltage V = 30 sin 300 t is applied to a circuit. The estimated value of impedance is : 
Q7.The time constant of an RC circuit is: 
Q8.The reactance offered by a capacitor to alternating current of frequency ‘f’ is 10 ohm. If the frequency is made to operate at ‘2f’, then the reactance becomes equal to ______ .
Q9.An inductor having an inductance of 0.14 H and a resistance of 6 Ω is connected in series with a capacitor across 50 Hz Supply. Calculate the capacitive reactance required to give the circuit power factor 0.6 lagging. Assume supply voltage to be sinusoidal. 
Q10.In a pure inductive circuit if the supply frequency is reduced to 1/10th of the previous value, the current will be:
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More Network Theory Questions

Q1.Which of the following factors is primarily used to determine the rating of a resistor?
Q2.In an electrical circuit, there are two resistors (R1 = 5 Ω and R2 = 10 Ω) connected in series with a 15 V battery. What is the voltage drop across R2, according to Kirchhoff’s Voltage Law (KVL)?
Q3.In a three-phase system, the sum of the three phase voltage phasors in a balanced system is _____. 
Q4.If two AC waveforms have a phase difference of 0°, they are said to be _____. 
Q5.Current I(s) in RL circuit is given as \(\rm I(s)=\frac{1.5}{s+4}\) Obtain i(t) for t > 0
Q6.A parallel RLC circuit has an inductance of 1 H and a capacitance of 1 µF. What is the resonant frequency (f0 )? 
Q7.A sinusoidal voltage is given by v(t)=100 sin(ωt+30°). What is the corresponding phasor representation?
Q8.If the peak voltage of a full-wave rectifier is 20 V, what is the average output voltage?
Q9.If the frequency of an AC source connected to a pure capacitor is doubled, the capacitive reactance will ________.
Q10.Find the voltage Vs in the circuit by using Kirchoff's Voltage Law. 
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