Govt Exams Mock Test FREE | Online Quiz Competition

Q1. A change of 5% in the supply voltage to an induction motor will produce a change of approximately

5% in the rotor torque.

10% in the rotor torque.

20% in the rotor torque.

25% in the rotor torque.

Q2. In a DC series motor, the torque developed is 20 Nm at 10 A load current, if the load current is doubled, the new torque will be

40 N-m

10 N-m

80 N-m

60 N-m

Q3. A 3000/300 V single phase transformer takes 0.8 A at power factor of 0.4 on open circuit. Find the magnetizing reactance

411 ohm

311 ohm

523 ohm

513 ohm

Q4. The nomenclature of the following 3-φ transformer is:

Yd11

Yd1

Dy1

Dy11

Q5. A 4-pole, \(500\: V\) DC shunt motor has 720 wave connected conductor on its armature. The full load armature current is \(60\: A\) and the flux per pole is \(0.03\: Wb\), the armature resistance including brush contact is \(0.2\: \Omega\). Calculate the full load speed of the motor.

433.33 RPM

677.77 RPM

633.33 RPM

567.67 RPM

Q6. A 10-pole induction motor is supplied by a 6-pole alternator, which is driven at 1400 rpm. If the motor runs with a slip of 5%, what is its speed?

1575 rpm

882 rpm

1425 rpm

798 rpm

Q7. Statement 1: The reactive power drawn by an induction motor will be same irrespective of load torque. Statement 2: The active power drawn by an induction motor will be same irrespective of load torque. Statement 3: The reactive power drawn by an induction motor varies with the variation of load torque. Statement 4: The active power drawn by an induction motor varies with the variation of load torque. Which of these statements are true?

Statements 1 & 2

Statements 2 & 3

Statements 1 & 4

Statements 2 & 4

Q8. A single phase ideal transformer is having a voltage rating \(\frac{200V}{100V}\), 50 Hz. The HV and LV sides of the transformer are connected in two different ways with the help of voltmeters as depicted in figure (a) and (b).

If the HV side is energized with 200 V, 50 Hz source in both the cases, the readings of voltmeters \(V1\) and \(V_2\) respectively will be:

100 V and 300 V

300 V and 100 V

100 V or 0 V

0 V or 300 V

Q9. In case of loss of field excitation in a generator, while the mechanical input remains intact, the generator runs as a/an

Induction motor.

D.C. motor.

Synchronous motor.

induction generator.

Q10. A 10 kVA, 400V/200 V single phase transformer with a resistance of 3 % and reactance of 6 % is supplying a current of 50 A to a resistive load, voltage across load is

176 V

188.7 V

194 V

205.6 V

Quiz

Year 2025

February
Week # 2 Quiz 1

Q1. A change of 5% in the supply voltage to an induction motor will produce a change of approximately

Q2. In a DC series motor, the torque developed is 20 Nm at 10 A load current, if the load current is doubled, the new torque will be

Q3. A 3000/300 V single phase transformer takes 0.8 A at power factor of 0.4 on open circuit. Find the magnetizing reactance

Q4. The nomenclature of the following 3-φ transformer is:

Q5. A 4-pole, \(500\: V\) DC shunt motor has 720 wave connected conductor on its armature. The full load armature current is \(60\: A\) and the flux per pole is \(0.03\: Wb\), the armature resistance including brush contact is \(0.2\: \Omega\). Calculate the full load speed of the motor.

Q6. A 10-pole induction motor is supplied by a 6-pole alternator, which is driven at 1400 rpm. If the motor runs with a slip of 5%, what is its speed?

Q9. In case of loss of field excitation in a generator, while the mechanical input remains intact, the generator runs as a/an

Q10. A 10 kVA, 400V/200 V single phase transformer with a resistance of 3 % and reactance of 6 % is supplying a current of 50 A to a resistive load, voltage across load is

Quiz

Year 2025

February Week # 1 Expire on 28 Feb 2025

February Week # 2 Expire on 07 Mar 2025

February Week # 3 Expire on 14 Mar 2025

February Week # 4 Expire on 21 Mar 2025

February Week # 2 Quiz 1

Q1. A change of 5% in the supply voltage to an induction motor will produce a change of approximately

Q2. In a DC series motor, the torque developed is 20 Nm at 10 A load current, if the load current is doubled, the new torque will be

Q3. A 3000/300 V single phase transformer takes 0.8 A at power factor of 0.4 on open circuit. Find the magnetizing reactance

Q4. The nomenclature of the following 3-φ transformer is:

Q5. A 4-pole, \(500\: V\) DC shunt motor has 720 wave connected conductor on its armature. The full load armature current is \(60\: A\) and the flux per pole is \(0.03\: Wb\), the armature resistance including brush contact is \(0.2\: \Omega\). Calculate the full load speed of the motor.

Q6. A 10-pole induction motor is supplied by a 6-pole alternator, which is driven at 1400 rpm. If the motor runs with a slip of 5%, what is its speed?

Q9. In case of loss of field excitation in a generator, while the mechanical input remains intact, the generator runs as a/an

Q10. A 10 kVA, 400V/200 V single phase transformer with a resistance of 3 % and reactance of 6 % is supplying a current of 50 A to a resistive load, voltage across load is

Record & Track Your Performance

February
Week # 2 Quiz 1