This set of Electrical Measurements Multiple Choice Questions & Answers (MCQs) focuses on “Phase Sequence Indicator”.
1. Synchronization of A.C. supply means __________
a) different phase sequence
b) same phase sequence
c) zero phase
d) using a transformer
2. Disc rotation is determined by ________
a) the supply voltage
b) an arrow
c) the turns ratio
d) the load current
3. How many types of phase sequence indicators are there?
a) 1
b) 5
c) 2
d) 10
4. A rotating phase sequence indicator consists of ________
a) 1 coil
b) 2 coils
c) 5 coils
d) 3 coils
5. Phase sequence indicator gives the maximum value of phase voltages.
a) True
b) False
6. The three coils are ________
a) star connected
b) delta connected
c) not connected
d) shorted
7. Eddy e.m.f produces a torque.
a) True
b) False
8. Excitation of the three coils produces ________
a) a static magnetic field
b) a rotating magnetic field
c) a static electric field
d) a rotating electric field