Govt Exams Mock Test FREE | Online Quiz Competition

Q1. A two port network is defined by the relations \(I_1=V_1+2V_2\) and \(I_2=3V_1+2V_2\). then \(Z_{12}\) is

-2

2

1/2

- 1/2

Q2. Two wattmeters connected to measure the power in 3 phase balanced delta connected load read \(W_1=12\:KW\) and \(W_2=15 KW\). If same load be connected in star, the wattmeter would read

\(W_1 = 8.66\:KW\) , \(W_2= 6.93\:KW\)

\(W_1= 6.96 \:KW\) , \(W_2= 8.66\:KW\)

\(W_1=5\:KW\) , \(W_2= 4\:KW \)

\(W_1=4\:KW\) , \(W_2= 5\:KW \)

Q3. If the supply volrage is 160 V,the value of power dissipated in the \(15\:\Omega\) resistor will be:

360 W

240 W

180 W

120 W

Q4. A \(120\:\Omega\) resistor is in parallel with a capacitor with a capacitive reactance of \(40\:\Omega\). Both components are across a 20 V AC source. What is the magnitude of the total current through the circuit?

\(\sqrt \frac{2}{9}A\)

\(\sqrt \frac{5}{18}A\)

\(\sqrt \frac{1}{40}A\)

\(\sqrt \frac{1}{120}A\)

Q5. An R-L series circuit draws 15 mA current from a 120 V, 50 Hz supply. The current lags the voltage by 60°. The value of resistance R is

1 k\(\Omega\)

2 k\(\Omega\)

4 k\(\Omega\)

8 k\(\Omega\)

Q6. The current supplied by the battery in the electric circuit shown in Fig. is

5.02 A

6.5 A

2.25 A

8.52 A

Q7. Find DELTA equivalent resistance \(R_{12}\), \(R_{23}\), and \(R_{31}\) from the given STAR configuration.

9\(\Omega\),24\(\Omega\),12\(\Omega\)

18\(\Omega\),24\(\Omega\),9\(\Omega\)

6\(\Omega\),18\(\Omega\),12\(\Omega\)

18\(\Omega\),12\(\Omega\),24\(\Omega\)

Q8. Two capacitors of 2 \(\mu\)F and 3 \(\mu\)F are charged to 150 V and 120 V respectively, as shown in fig. An uncharged capacitor of capacity 1.5 \(\mu\)F falls to the free end of wire. Then which is wrong statement?

Charge on 1.5 \(\mu\)F capacitor is 180 \(\mu\)C

Charge on 2 \(\mu\)F capacitor is 120 \(\mu\)C

Positive charge flows through A from right to left

Positive charge flows through A from left to right

Q9. The maximum permissible current through a resistor is \(250 \:mA\). If the resistor is rated as \(R\:\Omega,\:0.5 \:W\), then find the value of R.

\(8\:\Omega\)

\(4\:\Omega\)

\(40\:\Omega\)

\(80\:\Omega\)

Q10. When four capacitors of capacitance \(\frac{1}{4}\: \mu F\) are connected in series, the resultant capacitance will be

\(1\: \mu F\)

\(\frac{1}{8}\: \mu F\)

\(\frac{1}{16}\: \mu F\)

\(4\: \mu F\)

Quiz

Year 2024

November
Week # 1 Quiz 1

Q1. A two port network is defined by the relations \(I_1=V_1+2V_2\) and \(I_2=3V_1+2V_2\). then \(Z_{12}\) is

Q2. Two wattmeters connected to measure the power in 3 phase balanced delta connected load read \(W_1=12\:KW\) and \(W_2=15 KW\). If same load be connected in star, the wattmeter would read

Q3. If the supply volrage is 160 V,the value of power dissipated in the \(15\:\Omega\) resistor will be:

Q4. A \(120\:\Omega\) resistor is in parallel with a capacitor with a capacitive reactance of \(40\:\Omega\). Both components are across a 20 V AC source. What is the magnitude of the total current through the circuit?

Q5. An R-L series circuit draws 15 mA current from a 120 V, 50 Hz supply. The current lags the voltage by 60°. The value of resistance R is

Q6. The current supplied by the battery in the electric circuit shown in Fig. is

Q7. Find DELTA equivalent resistance \(R_{12}\), \(R_{23}\), and \(R_{31}\) from the given STAR configuration.

Q8. Two capacitors of 2 \(\mu\)F and 3 \(\mu\)F are charged to 150 V and 120 V respectively, as shown in fig. An uncharged capacitor of capacity 1.5 \(\mu\)F falls to the free end of wire. Then which is wrong statement?

Q9. The maximum permissible current through a resistor is \(250 \:mA\). If the resistor is rated as \(R\:\Omega,\:0.5 \:W\), then find the value of R.

Q10. When four capacitors of capacitance \(\frac{1}{4}\: \mu F\) are connected in series, the resultant capacitance will be

Quiz

Year 2024

October Week # 2 Expire on 07 Nov 2024

October Week # 3 Expire on 14 Nov 2024

October Week # 4 Expire on 21 Nov 2024

November Week # 1 Expire on 30 Nov 2024

November Week # 1 Quiz 1

Q1. A two port network is defined by the relations \(I_1=V_1+2V_2\) and \(I_2=3V_1+2V_2\). then \(Z_{12}\) is

Q2. Two wattmeters connected to measure the power in 3 phase balanced delta connected load read \(W_1=12\:KW\) and \(W_2=15 KW\). If same load be connected in star, the wattmeter would read

Q3. If the supply volrage is 160 V,the value of power dissipated in the \(15\:\Omega\) resistor will be:

Q4. A \(120\:\Omega\) resistor is in parallel with a capacitor with a capacitive reactance of \(40\:\Omega\). Both components are across a 20 V AC source. What is the magnitude of the total current through the circuit?

Q5. An R-L series circuit draws 15 mA current from a 120 V, 50 Hz supply. The current lags the voltage by 60°. The value of resistance R is

Q6. The current supplied by the battery in the electric circuit shown in Fig. is

Q7. Find DELTA equivalent resistance \(R_{12}\), \(R_{23}\), and \(R_{31}\) from the given STAR configuration.

Q8. Two capacitors of 2 \(\mu\)F and 3 \(\mu\)F are charged to 150 V and 120 V respectively, as shown in fig. An uncharged capacitor of capacity 1.5 \(\mu\)F falls to the free end of wire. Then which is wrong statement?

Q9. The maximum permissible current through a resistor is \(250 \:mA\). If the resistor is rated as \(R\:\Omega,\:0.5 \:W\), then find the value of R.

Q10. When four capacitors of capacitance \(\frac{1}{4}\: \mu F\) are connected in series, the resultant capacitance will be

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November
Week # 1 Quiz 1