Govt Exams Mock Test FREE | Online Quiz Competition

Q1. Lamp A of 100 W, 200 V and lamp B of 40 W, 200 V are connected in series across a 200 V supply. Which lamp will glow brighter?

Lamp A will be brighter than lamp B.

Lamp B will be brighter than lamp A.

Both lamps will glow equally bright.

No lamp will glow.

Q2. A 100 V source has a series internal resistance of 1\(\Omega\). The maximum power that can be delivered to the load is

1000 W

2000 W

2500 W

5000 W

Q3. A star circuit has element of resistance \(10\:\Omega\). The equivalent delta elements will be

\(15\:\Omega\)

\(30\:\Omega\)

\(10\:\Omega\)

\(7.5\:\Omega\)

Q4. For a given circuit, find \(R_{TH}\) between terminal 'a' and 'b':

\(15\:\Omega\)

\(5\:\Omega\)

\(12\:\Omega\)

\(9\:\Omega\)

Q5. Determine the value of current I, in the circuit shown in Fig.

2 A

1 A

3 A

4 A

Q6. Three equal star-connected inductors take 8 kW at 0.8 power factor when connected to a 460 V three - phase 3-wire supply. If one of the inductor in phase – Y is short circuited, then the line current in phase-Y is ……………….. Assume RYB sequence.

37.6 A

27.6 A

21.7 A

31.7 A

Q7. An electrical lamp consumes 100 W of power. If the supply voltage is 220 V the energy consumed in 30 minutes is

0.005 kWh

0.05 kWh

0.5 kWh

5 kWh

Q8. A 40 \(\mu F\) capacitor is connected across a 230 V, 50 Hz supply. Find the reactance offered by the capacitor and r.m.s. value of the current drawn by the capacitor. (May choose the most approximate values)

79.5 \(\Omega\), 2.89 A

11.3 \(\Omega\), 159 A

11.3 \(\Omega\), 20.35 A

63.6 \(\Omega\), 2.89 A

Q9. For the Thevenin's equivalent network, the correct expression for load current \(I_L\) is ______.

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

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

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

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

Q10. 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

Quiz

Year 2025

February
Week # 1 Quiz 1

Q1. Lamp A of 100 W, 200 V and lamp B of 40 W, 200 V are connected in series across a 200 V supply. Which lamp will glow brighter?

Q2. A 100 V source has a series internal resistance of 1\(\Omega\). The maximum power that can be delivered to the load is

Q3. A star circuit has element of resistance \(10\:\Omega\). The equivalent delta elements will be

Q4. For a given circuit, find \(R_{TH}\) between terminal 'a' and 'b':

Q5. Determine the value of current I, in the circuit shown in Fig.

Q6. Three equal star-connected inductors take 8 kW at 0.8 power factor when connected to a 460 V three - phase 3-wire supply. If one of the inductor in phase – Y is short circuited, then the line current in phase-Y is ……………….. Assume RYB sequence.

Q7. An electrical lamp consumes 100 W of power. If the supply voltage is 220 V the energy consumed in 30 minutes is

Q8. A 40 \(\mu F\) capacitor is connected across a 230 V, 50 Hz supply. Find the reactance offered by the capacitor and r.m.s. value of the current drawn by the capacitor. (May choose the most approximate values)

Q9. For the Thevenin's equivalent network, the correct expression for load current \(I_L\) is ______.

Q10. 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:

Quiz

Year 2025

January Week # 2 Expire on 07 Feb 2025

January Week # 3 Expire on 14 Feb 2025

January Week # 4 Expire on 21 Feb 2025

February Week # 1 Expire on 28 Feb 2025

February Week # 1 Quiz 1

Q1. Lamp A of 100 W, 200 V and lamp B of 40 W, 200 V are connected in series across a 200 V supply. Which lamp will glow brighter?

Q2. A 100 V source has a series internal resistance of 1\(\Omega\). The maximum power that can be delivered to the load is

Q3. A star circuit has element of resistance \(10\:\Omega\). The equivalent delta elements will be

Q4. For a given circuit, find \(R_{TH}\) between terminal 'a' and 'b':

Q5. Determine the value of current I, in the circuit shown in Fig.

Q6. Three equal star-connected inductors take 8 kW at 0.8 power factor when connected to a 460 V three - phase 3-wire supply. If one of the inductor in phase – Y is short circuited, then the line current in phase-Y is ……………….. Assume RYB sequence.

Q7. An electrical lamp consumes 100 W of power. If the supply voltage is 220 V the energy consumed in 30 minutes is

Q8. A 40 \(\mu F\) capacitor is connected across a 230 V, 50 Hz supply. Find the reactance offered by the capacitor and r.m.s. value of the current drawn by the capacitor. (May choose the most approximate values)

Q9. For the Thevenin's equivalent network, the correct expression for load current \(I_L\) is ______.

Q10. 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:

Record & Track Your Performance

February
Week # 1 Quiz 1