NV Infra Interview Questions and Answers

A conductor is a person who leads and directs a group of performers, such as musicians or actors, during a performance.

• Conductors use hand gestures, facial expressions, and body language to communicate with the performers.

• They set the tempo, dynamics, and overall interpretation of the music or performance.

• Conductors often use a baton to help keep time and guide the musicians.

• Examples of famous conductors include Leonard Bernstein, Gustavo Dudamel, and Marin Alsop.

An inductor is a passive electronic component that stores energy in a magnetic field when current flows through it.

• Inductors work based on Faraday's law of electromagnetic induction

• They resist changes in current flow by storing energy in a magnetic field

• Advantages include filtering out high-frequency noise, energy storage, and creating phase shifts in AC circuits

The principle of AC motor involves the interaction between magnetic fields to produce rotational motion.

• AC motors operate on the principle of electromagnetic induction

• They consist of a stator (stationary part) and a rotor (rotating part)

• The stator produces a rotating magnetic field which interacts with the rotor's magnetic field to generate motion

• Common types of AC motors include induction motors and synchronous motors

Yes, the movement of electrons in a conductor is what conducts electric current.

• Electrons flow through the conductor due to the presence of an electric field

• The movement of electrons creates a flow of charge, which is what we refer to as electric current

• The speed at which electrons move through a conductor is known as drift velocity

Advantages of AC motors include high efficiency, low maintenance, and easy speed control.

• High efficiency: AC motors are known for their high efficiency in converting electrical energy into mechanical energy.

• Low maintenance: AC motors require less maintenance compared to DC motors, reducing downtime and costs.

• Easy speed control: AC motors can easily be controlled by adjusting the frequency of the power supply, allowing for precise speed control.

• Wide range of sizes and power ca...read more

AC motors are used in various applications such as industrial machinery, household appliances, HVAC systems, and electric vehicles.

• Industrial machinery: AC motors are commonly used in pumps, fans, conveyors, and other industrial equipment.

• Household appliances: AC motors power devices like refrigerators, washing machines, and air conditioners.

• HVAC systems: AC motors drive the fans and compressors in heating, ventilation, and air conditioning systems.

• Electric vehicles: AC motor...read more