Number of tapping's to equalizer ring is equal to number of

A. Poles

B. Pole pairs

C. Parallel paths

D. Commutator segments

Power System MCQs With Explanation 

The advantages of high transmission voltage are
The charging current drawn by the cable is
The fact that current density is higher at the surface when compared to the centre is known as
In which of the following transmission lines capacitance effect is negligible?
The distribution constant of the transmission line is
Proximity effect is more in case of
If the frequency is increased, then the skin effect will
Bundled conductors in EHV transmission lines help in
Which of the following produces radio interference in communication lines?
Telecommunication lines are transposed to reduce the
What is the function of economizer in Thermal Power Plant 
Which of the following effects are associated with transmission line
The insulator thickness on the conductor, in cables, depends upon
By using a guard ring in a transmission line, its string efficiency
If sag in an overhead line increase, the tension in the line
Corona is accompanied by
The conductor carries more current on the surface as compared to the core. This is called as
Critical disruptive voltage is a voltage at which
Bundled conductors are used for EHV transmission lines primarily for reducing the
Low power factor is usually not due to
Bonding is done at both ends of the cable to reduce the
For Improving power factor
Stock bridge dampers are used to
Which of the following insulator is practically used for railway crossings?
Which of the following decides the insulation level of 400 kV, EHV line?
When earth fault occurs
The minimum length of pipe electrode used for earthing should not be less than
A ground wire is used to
Earth resistance in typical domestic wiring is
By which of the following systems electric power may be transmitted?
Which of the following equipment will be most economical for regulating the voltage in the distribution feeder?

Transformer MCQs With Explanation 

In a transformer the primary flux is 
The noise of the transformer is mainly due to
Buchholz relay is used for the protection
Iron loss in a transformer can be determined by
Oil is provided in an oil-filled transformer for
In a star-delta transformer, the delta side phase voltage leads the star sides phase voltage by an angle
Minimum voltage regulation occurs in transformer when the power factor of the load is
The chemical used in the breather of a transformer should have the property of
The power transformer can be termed as a constant
In a transformer, which of the following losses are zero?
Which of the following Transformer can have a tap changer?
If the supply frequency (f) of a transformer decreases, the effect of frequency on the transformer's secondary output voltage?
The primary winding of a transformer has a 120 V ac supply. What is the value of secondary voltage if the turn ratio is 10?
The efficiency of a power transformer is _____ at full load.
In a transformer the relation between the input frequency and the output voltage on secondary winding is _____.
In a current transformer, _____ winding is closed.
A transformer is a _____ device.
A step-down transformer has _____ number of turns on primary winding and _____ number of turns on the secondary winding.
A step-up transformer has _____ number of turns on primary winding and _____ number of turns on the secondary winding.
Transformer works on ______ principle.
Shell Type Transformer is mainly used for 
A Magnetic Oil level Guage (MOG) is used in the Transformer to 
The Function Of Power Transformer is/are
The Radiators are used in transformers for 

Synchronous Motor MCQs With Explanation 

Electrical Interesting Questions | All Posts

Will a D.C Shunt Motor operate on an A.C Supply?
What is Load Shedding Transformer? Applications of Load Shedding Transformers
What is XLPE Cables? Applications of XLPE cables 
What is Silicon Rubber Insulator? Where Silicon Rubber Insulator is used?
What is a voltage detecting insulator? Where voltage detecting insulators are used?
What Is Vacuum Interrupter? How Vacuum Interrupters Work in Circuit Breaker?
What is Arc Chutes or Arc Divider or Arc Splitters In Circuit Breaker?
What is a High Voltage Detector? Where High Voltage Detector is Used?
What is Wave Trap? Where it is Used?
why generation is 11kv in the power stations?

Why Earth Pin is Thicker and Longer in a 3-Pin Plug?
Why are Bundle Conductors used in Transmission Lines?
What are the Colored Aerial Marker Balls on Power Lines For?
Why is Electric Power Transmission is Multiple of 11 i.e 11kV, 22kV, 66kV, etc?
Why Tertiary Winding is used in transformers?
Why PT and CT Terminals are Star Connected?
What is Oil Surge Relay in Transformer?
What is Stockbridge Vibration Damper In Transmission Line?
Why Stones are used in Sub-Station Switchyard?
Why Arc Horn is used in High Voltage Transmission Line?
Why tester does not work on DC?

What is Auto-Recloser In-Transmission System? How its Works?
What is Aviation Light? Why it is used?
Why Transformer Taps On High Voltage Side?
Why Earthing Transformer is used?
Why does a humming sound occur in high voltage transmission lines?
Why is shunt capacitor bank used in substation?
Why do the positive and negative wires spark when touched?
Why reactors are used in substations?
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