Govt Exams Mock Test FREE | Online Quiz Competition

Q1. The speed of a DC shunt motor is required to be more than F.L. (Full Load) speed. This is possible by ___________.

Increasing the armature current

Decreasing the armature current

Increasing the excitation current

Reducing the field current

Q2. A synchronous generation is delivering a balanced load at unity p.f. The phase angle between line voltage and line current is

60 Degree

0 Degree

90 Degree

30 Degree

Q3. The field poles and armature of d.c. generator are laminated in order to reduce its

Weight

Speed

eddy current loss

hysteresis loss

Q4. The transformer works on the principle of:

Mutual induction

Mutual capacitance

All of the above

None of the above

Q5. The terminal voltage of a generator vary widely with changes in load current.

shunt

series

flat compounded

None of the above

Q6. Maximum value of torque angle \(\alpha\) in a synchronous motor is________degrees electrical.

45

90

between 45 and 90

below 60

Q7. Which of the following is NOT true for a slip ring induction motor?

Since the rotor bars are permanently shorted, it is not possible to add external resistance.

The rotor winding is similar to the stator winding.

Rotor copper losses are high and hence less efficiency.

Construction is complicated due to presence of slip ring and brushes.

Q8. A DC motor with armature resistance of 0.5 \( \Omega \) is connected to a 230 V supply. Find the starting current in the armature.

230 A

46 A

23 A

460 A

Q9. V and inverted V curves are obtained for _______.

Synchronous motor

Induction motor

Stepper motor

DC motor

Q10. Poles of dc machine are often laminated to

reduce pulsation loss

reduce armature reaction

reduce iron weight

dissipate more heat

Quiz

Year 2023

September
Week # 2 Quiz 3

Q1. The speed of a DC shunt motor is required to be more than F.L. (Full Load) speed. This is possible by ___________.

Q2. A synchronous generation is delivering a balanced load at unity p.f. The phase angle between line voltage and line current is

Q3. The field poles and armature of d.c. generator are laminated in order to reduce its

Q4. The transformer works on the principle of:

Q5. The terminal voltage of a generator vary widely with changes in load current.

Q6. Maximum value of torque angle \(\alpha\) in a synchronous motor is________degrees electrical.

Q7. Which of the following is NOT true for a slip ring induction motor?

Q8. A DC motor with armature resistance of 0.5 \( \Omega \) is connected to a 230 V supply. Find the starting current in the armature.

Q9. V and inverted V curves are obtained for _______.

Q10. Poles of dc machine are often laminated to

Quiz

Year 2023

September Week # 2 Expire on 07 Oct 2023

September Week # 3 Expire on 14 Oct 2023

September Week # 4 Expire on 21 Oct 2023

October Week # 1 Expire on 31 Oct 2023

September Week # 2 Quiz 3

Q1. The speed of a DC shunt motor is required to be more than F.L. (Full Load) speed. This is possible by ___________.

Q2. A synchronous generation is delivering a balanced load at unity p.f. The phase angle between line voltage and line current is

Q3. The field poles and armature of d.c. generator are laminated in order to reduce its

Q4. The transformer works on the principle of:

Q5. The terminal voltage of a generator vary widely with changes in load current.

Q6. Maximum value of torque angle \(\alpha\) in a synchronous motor is________degrees electrical.

Q7. Which of the following is NOT true for a slip ring induction motor?

Q8. A DC motor with armature resistance of 0.5 \( \Omega \) is connected to a 230 V supply. Find the starting current in the armature.

Q9. V and inverted V curves are obtained for _______.

Q10. Poles of dc machine are often laminated to

Record & Track Your Performance

September
Week # 2 Quiz 3