Operational Energy Group India Interview Questions, Process, and Tips

The frequency of AC supply varies depending on the country and region.

• In North America, the frequency is typically 60 Hz.

• In Europe and most other parts of the world, the frequency is typically 50 Hz.

• The frequency can affect the performance of certain electrical devices.

• Some countries have multiple frequency standards depending on the region.

• Frequency can be measured using a frequency meter or multimeter.

The rated voltage of a distribution transformer is the voltage at which it is designed to operate.

• The rated voltage of a distribution transformer is typically specified by the manufacturer.

• It is usually expressed in kilovolts (kV) or volts (V).

• For example, a distribution transformer may have a rated voltage of 11 kV or 33 kV.

• The rated voltage determines the maximum voltage that the transformer can handle without exceed...read more

The type of motor used in cranes is typically an electric motor.

• Electric motors are commonly used in cranes due to their efficiency and controllability.

• AC induction motors and DC motors are the most common types used in cranes.

• AC induction motors are preferred for their simplicity and reliability.

• DC motors offer better speed control and are often used in more advanced crane systems.

• Examples of crane motors include squi...read more

Synchronous motors run on a constant speed.

• Synchronous motors maintain a constant speed regardless of the load.

• They are commonly used in applications that require precise speed control.

• Examples of synchronous motors include those used in industrial machinery and electric clocks.