Govt Exams Mock Test FREE | Online Quiz Competition

Q1. An electric iron is marked as 230 V, 800 Watt. How many units of electrical energy are consumed if it is used for 10 hours ?

800

8

80

8000

Q2. In a series RLC circuit at resonance, the magnitude of the voltage developed across the capacitor

Is always zero

Can never be greater than the input voltage

Can be greater than the input voltage, however it is \(90^\circ\) out of phase with input voltage

Can be greater than the input voltage and is in phase with the input voltage

Q3. A 100 watt light bulb burns on average 10 hrs/day for one week. The weekly consumption of energy will be_______kwh.

7

70

0.7

0.07

Q4. A capacitor of capacitance \(C\) farad is connected in parallel with a resistance of \(R\:\Omega\). An AC voltage of \(V\) volt supplied across the circuit. if the current flowing through resistance is equal to \(I_R\) and current flowing through the capacitors is equal to \(I_C\). What is the value of the total current flowing through the circuit?

\(I = V ({1\over R}+{C\over \omega} < 90^\circ)\)

\(I = V ({1\over R}+{\omega\over C} < 90^\circ)\)

\(I = V ({1\over C}+\omega R< 90^\circ)\)

\(I = V ({1\over R}+\omega C< 90^\circ)\)

Q5. The voltage drop across \(15\:\Omega\) resistor is:

75 V

30 V

45 V

60 V

Q6. A star circuit has element of resistance \(10\:\Omega\). The equivalent delta elements will be

\(15\:\Omega\)

\(30\:\Omega\)

\(10\:\Omega\)

\(7.5\:\Omega\)

Q7. Five cells are connected in series in a row and then four such rows are connected in parallel to feed current to a resistive load of 1.25 \(\Omega\). Each cell has an emf of 1.5 V with internal resistance of 0.2 \(\Omega\). The current through the load will be

5A

2.5A

10A

2A

Q8. Two wattmeters connected to measure power in a three-phase balanced load, if the reactive power input is 7.5 KVAR and power factor of the load is 0.8. Calculate the total power input.

\(7500\:W\)

\(10000\:W\)

\(15000\:W\)

\(20000\:W\)

Q9. A series RLC circuit has \(R = 2\:\Omega\), \(L=1\:H\) and \(C =1\:F\) respectively. If \(V_m = 230\:V\), the current \(I_m\) at resonance is______.

100 A

90 A

115 A

110 A

Q10. The effective impedance of a series RLC circuit under resonance is equal to ______.

Resistance

Inductive reactance

Capacitive reactance

Either b or c

Quiz

Year 2024

February
Week # 1 Quiz 1

Q1. An electric iron is marked as 230 V, 800 Watt. How many units of electrical energy are consumed if it is used for 10 hours ?

Q2. In a series RLC circuit at resonance, the magnitude of the voltage developed across the capacitor

Q3. A 100 watt light bulb burns on average 10 hrs/day for one week. The weekly consumption of energy will be_______kwh.

Q5. The voltage drop across \(15\:\Omega\) resistor is:

Q6. A star circuit has element of resistance \(10\:\Omega\). The equivalent delta elements will be

Q7. Five cells are connected in series in a row and then four such rows are connected in parallel to feed current to a resistive load of 1.25 \(\Omega\). Each cell has an emf of 1.5 V with internal resistance of 0.2 \(\Omega\). The current through the load will be

Q8. Two wattmeters connected to measure power in a three-phase balanced load, if the reactive power input is 7.5 KVAR and power factor of the load is 0.8. Calculate the total power input.

Q9. A series RLC circuit has \(R = 2\:\Omega\), \(L=1\:H\) and \(C =1\:F\) respectively. If \(V_m = 230\:V\), the current \(I_m\) at resonance is______.

Q10. The effective impedance of a series RLC circuit under resonance is equal to ______.

Quiz

Year 2024

July Week # 1 Expire on 31 Jul 2024

July Week # 2 Expire on 07 Aug 2024

July Week # 3 Expire on 14 Aug 2024

July Week # 4 Expire on 21 Aug 2024

February Week # 1 Quiz 1

Q1. An electric iron is marked as 230 V, 800 Watt. How many units of electrical energy are consumed if it is used for 10 hours ?

Q2. In a series RLC circuit at resonance, the magnitude of the voltage developed across the capacitor

Q3. A 100 watt light bulb burns on average 10 hrs/day for one week. The weekly consumption of energy will be_______kwh.

Q5. The voltage drop across \(15\:\Omega\) resistor is:

Q6. A star circuit has element of resistance \(10\:\Omega\). The equivalent delta elements will be

Q7. Five cells are connected in series in a row and then four such rows are connected in parallel to feed current to a resistive load of 1.25 \(\Omega\). Each cell has an emf of 1.5 V with internal resistance of 0.2 \(\Omega\). The current through the load will be

Q8. Two wattmeters connected to measure power in a three-phase balanced load, if the reactive power input is 7.5 KVAR and power factor of the load is 0.8. Calculate the total power input.

Q9. A series RLC circuit has \(R = 2\:\Omega\), \(L=1\:H\) and \(C =1\:F\) respectively. If \(V_m = 230\:V\), the current \(I_m\) at resonance is______.

Q10. The effective impedance of a series RLC circuit under resonance is equal to ______.

Record & Track Your Performance

February
Week # 1 Quiz 1