Power Generator

171. Two things which are same for primary and secondary of transformer are

1. ampere turns and voltage per turn
2. resistance and leakage reactance
3. current and inducted voltage
4. number of turns and power

View answer

172. Volt is a unit of

1. electromotive force
2. energy
3. force
4. magneto motive force

View answer

173. What can be found in a transformer with open-circuit test?

1. Copper losses
2. Turns ratio
3. Total equivalent resistance
4. Total equivalent leakage resistance

View answer

174. What cell is used to detect infrared radiation, either its generated voltage or its change of resistance may be used as a measure of the intensity of the radiation?

1. lead sulfide cell
2. Faure storage cell
3. infrared cell
4. Leclanche cell

View answer

175. What gives the relative activity in forming ion charges for some of the chemical elements?

1. Electrochemical series
2. Electrical series
3. Electromotive series
4. Both A and C above

View answer

176. What is the approcimate efficiency of large transformer?

1. 65%
2. 80%
3. 50%
4. 95%

View answer

177. What is the nominal output of an automotive battery having six lead acid cells in series?

1. 12V
2. 24V
3. 6V
4. 3V

View answer

178. What is the output of a lead acid cell?

1. 2.1V
2. 1.5V
3. 1.35V
4. 1.25V

View answer

179. What refers to a method in which the charger and the battery are always connected to each other for supplying current to the load

1. Continuous charging
2. Float charging
3. Infinite charging
4. On line charging

View answer

180. When load is removed, the motote that will run at the ___________ highest speed is the motor

1. shunt
2. commulatively compounded
3. series
4. differentially compounded

View answer