Prakash Sponge Iron And Power Senior Project Engineer Electrical Interview Questions and Answers

The unit of Energy is Joule (J)

• The unit of Energy is Joule (J)

• Energy can also be measured in kilowatt-hours (kWh)

• 1 Joule is equal to 1 watt-second

The unit of resistance is Ohm (Ω).

• The unit of resistance is represented by the symbol Ω (Ohm).

• Resistance is measured in Ohms, named after the German physicist Georg Simon Ohm.

• One Ohm is equal to one volt per ampere (1 Ω = 1 V/A).

The unit of current is Ampere (A)

• The unit of current is Ampere (A)

• Current is the flow of electric charge in a circuit

• 1 Ampere is equivalent to 1 Coulomb per second

• Current is measured using an ammeter

The unit of capacitance is Farad (F)

• The unit of capacitance is named after Michael Faraday

• 1 Farad is equal to 1 Coulomb per Volt

• Common multiples of Farad include microfarad (uF) and picofarad (pF)

The unit of power is the watt (W)

• The unit of power is the watt (W)

• Power is the rate at which work is done or energy is transferred

• 1 watt is equal to 1 joule per second

• Common examples of power units include kilowatts (kW) and horsepower (hp)

The unit of power is the watt (W).

• The unit of power is the watt (W)

• Power is the rate at which work is done or energy is transferred

• 1 watt is equal to 1 joule per second

• Common examples of power units include kilowatts (kW) and horsepower (hp)

The unit of current is Ampere (A), which measures the rate of flow of electric charge.

• The unit of current is Ampere (A)

• Current is the rate of flow of electric charge

• Commonly represented by the symbol 'I'

• 1 Ampere is equivalent to 1 Coulomb per second

RPM stands for Revolutions Per Minute.

• RPM stands for Revolutions Per Minute

• It is a unit of rotational speed

• Commonly used in the context of engines, motors, and other rotating machinery

There are various types of motors including DC motors, AC motors, stepper motors, and servo motors.

• DC motors: used in applications where speed control is important, such as in electric vehicles.

• AC motors: commonly used in household appliances and industrial machinery.

• Stepper motors: used in applications requiring precise position control, like 3D printers.

• Servo motors: used in robotics and automation for accurate contr

Earthing is the process of connecting electrical systems to the ground to prevent electric shock and protect equipment.

• Earthing provides a path for fault currents to flow safely into the ground.

• It helps in stabilizing voltage levels and protecting against lightning strikes.

• Earthing is essential for safety in electrical systems to prevent electric shocks.

• Examples of earthing systems include grounding rods, grounding pla

Insulators are materials that do not conduct electricity and are used to prevent the flow of current.

• Insulators are materials with high resistivity, such as rubber, glass, porcelain, and plastic.

• They are used to separate conductors in electrical systems to prevent short circuits.

• Insulators are crucial for safety in electrical installations to avoid electric shocks and fires.

Cable tray erection in metro involves installing cable trays to support and protect electrical cables in underground transportation systems.

• Ensure proper planning and coordination with other trades to avoid conflicts during installation.

• Select appropriate cable tray materials based on the environment and load requirements.

• Follow safety regulations and guidelines to prevent accidents during installation.

• Consider factors...read more

Cable laying in tranch & cable tray involves the installation of electrical cables in underground trenches and on cable trays.

• Cable laying in tranch involves digging trenches underground to lay cables for electrical connections.

• Cable laying in cable tray involves placing cables on trays mounted on walls or ceilings for organized and safe routing.

• Proper planning and design are essential for efficient cable laying to ens...read more