Govt Exams Mock Test FREE | Online Quiz Competition

Q1. An ideal resistor and an ideal inductor are connected in series. The series combination is connected to an ideal sinusoidal AC supply. The magnitude of voltage across resistor is 50 Volt and that across the inductor is 120 Volt. The magnitude of supply voltage must be:

120 V

170 V

70 V

130 V

Q2. For the Thevenin's equivalent network, the correct expression for load current \(I_L\) is ______.

\(\frac{R_{TH}+R_L}{V_{TH}}\)

\(\frac{V_{TH} \times R_L }{R_{TH}+R_L}\)

\(\frac{V_{TH}}{R_{TH}+R_L}\)

\(\frac{V_{TH} \times R_{TH}}{R_{TH}+R_L}\)

Q3. The peak factor of a half-wave rectified sine wave is_________.

2

1.57

1.41

1.11

Q4. The graph of an electrical network has N nodes and B branches. The number of links L with respect to the choice of a tree, is given by

N – B + 1

B + N

B – N + 1

N – 2B – 1

Q5. The impedance at the resonant frequency of a series RLC circuit with L=20 mH, C=0.02 \(\mu\)F, and R=100 ohms is ________.

100 ohms

20 ohms

40 ohms

zero ohms

Q6. In a series RLC circuit, the value of resistance is 30 \(\Omega\), reactance of inductor is j50 \(\Omega\) is and reactance of capacitor is -j50 \(\Omega\). The circuit is applied a voltage source of 100 V with a phase angle of 20 ˚. The reactive power drawn from the source in the described network is

278 VAR

556 VAR

167 VAR

0 VAR

Q7. Weber/Ampere turn meter is the unit of:

magnetic flux of magnetic circuit

flux density of magnetic circuit

permeability in magnetic circuit

dipole moment of magnetic circuit

Q8. Find the y-parameter '\(Y_{11}\)' for the given network.

0.75 S

1.5 S

2 S

4 S

Q9. Three similar resistors are connected in star across 400V, three-phase lines. The line current is 5A. Calculate the value of each resistor.

56.568 \(\Omega\)

46.188 \(\Omega\)

138.56 \(\Omega\)

80 \(\Omega\)

Q10. The r.m.s. value of the voltage \(V(t) = 3 + 4 \cos 3t\) is _______V.

5

7

\(\sqrt{17}\)

\(3+2\sqrt{2}\)

Quiz

Year 2024

July
Week # 1 Quiz 2

Q1. An ideal resistor and an ideal inductor are connected in series. The series combination is connected to an ideal sinusoidal AC supply. The magnitude of voltage across resistor is 50 Volt and that across the inductor is 120 Volt. The magnitude of supply voltage must be:

Q2. For the Thevenin's equivalent network, the correct expression for load current \(I_L\) is ______.

Q3. The peak factor of a half-wave rectified sine wave is_________.

Q4. The graph of an electrical network has N nodes and B branches. The number of links L with respect to the choice of a tree, is given by

Q5. The impedance at the resonant frequency of a series RLC circuit with L=20 mH, C=0.02 \(\mu\)F, and R=100 ohms is ________.

Q7. Weber/Ampere turn meter is the unit of:

Q8. Find the y-parameter '\(Y_{11}\)' for the given network.

Q9. Three similar resistors are connected in star across 400V, three-phase lines. The line current is 5A. Calculate the value of each resistor.

Q10. The r.m.s. value of the voltage \(V(t) = 3 + 4 \cos 3t\) is _______V.

Quiz

Year 2024

August Week # 3 Expire on 14 Sep 2024

August Week # 4 Expire on 21 Sep 2024

September Week # 1 Expire on 30 Sep 2024

September Week # 2 Expire on 07 Oct 2024

July Week # 1 Quiz 2

Q1. An ideal resistor and an ideal inductor are connected in series. The series combination is connected to an ideal sinusoidal AC supply. The magnitude of voltage across resistor is 50 Volt and that across the inductor is 120 Volt. The magnitude of supply voltage must be:

Q2. For the Thevenin's equivalent network, the correct expression for load current \(I_L\) is ______.

Q3. The peak factor of a half-wave rectified sine wave is_________.

Q4. The graph of an electrical network has N nodes and B branches. The number of links L with respect to the choice of a tree, is given by

Q5. The impedance at the resonant frequency of a series RLC circuit with L=20 mH, C=0.02 \(\mu\)F, and R=100 ohms is ________.

Q7. Weber/Ampere turn meter is the unit of:

Q8. Find the y-parameter '\(Y_{11}\)' for the given network.

Q9. Three similar resistors are connected in star across 400V, three-phase lines. The line current is 5A. Calculate the value of each resistor.

Q10. The r.m.s. value of the voltage \(V(t) = 3 + 4 \cos 3t\) is _______V.

Record & Track Your Performance

July
Week # 1 Quiz 2