Government of Rajasthan Lecturer Interview Questions, Process, and Tips

A powerful and durable motor with high RPM is recommended for a mixer grinder.

• Choose a motor with a power rating of at least 500 watts for efficient grinding.

• Look for a motor with a high RPM (revolutions per minute) for faster and smoother grinding.

• Consider motors with copper winding for better heat dissipation and longer lifespan.

• Opt for motors with overload protection to prevent damage from excessive load.

• Check for m...read more

The secondary winding of a CT should not be kept open circuited because it can cause high voltage and damage the CT.

• An open-circuited secondary winding can lead to a high voltage across the winding, which can damage the CT.

• The secondary winding of a CT is designed to have a specific impedance to ensure accurate current measurement. Keeping it open-circuited disrupts this impedance.

• An open-circuited secondary winding ca...read more

The rating of an alternator is in KVA because the losses of an alternator are voltage dependent (iron losses) and current dependent (copper losses).

• The rating of an alternator is determined by its ability to handle both voltage and current losses.

• Iron losses in an alternator, which are voltage dependent, include hysteresis and eddy current losses.

• Copper losses in an alternator, which are current dependent, include resi...read more

A potential transformer is used to measure voltage, while a step down distribution transformer is used to reduce voltage.

• Potential transformers are used in electrical measurement systems to step down high voltage to a lower, measurable voltage.

• Step down distribution transformers are used in power distribution systems to reduce high voltage to a lower voltage suitable for use in homes and businesses.

• Potential transforme...read more