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House of Beauty Interview Questions and Answers

Updated 27 Jul 2024
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Q1. What is circuit breaker?

Ans.

A circuit breaker is an electrical switch that automatically interrupts the flow of current when it exceeds a certain limit.

  • It is used to protect electrical circuits from damage caused by overloading or short circuits.

  • It works by detecting the excess current and tripping the switch to break the circuit.

  • It can be reset manually or automatically depending on the type of circuit breaker.

  • Examples include thermal circuit breakers, magnetic circuit breakers, and hydraulic-magnetic ...read more

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Q2. What is current transformer?

Ans.

A current transformer is a device that measures the current flowing in a circuit by producing a proportional current in its secondary winding.

  • Consists of a primary winding and a secondary winding

  • Primary winding is connected in series with the circuit carrying the current to be measured

  • Secondary winding is connected to a measuring instrument or protective relay

  • Produces a current in the secondary winding that is proportional to the current in the primary winding

  • Used for current...read more

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Q3. What is motor ?

Ans.

A motor is a device that converts electrical energy into mechanical energy to produce motion.

  • Motors are used in various applications such as electric vehicles, industrial machinery, and household appliances.

  • There are different types of motors such as DC motors, AC motors, stepper motors, and servo motors.

  • The basic principle of a motor is the interaction between a magnetic field and an electric current.

  • Examples of motors include ceiling fans, washing machines, and electric car...read more

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Q4. What is contactor?

Ans.

A contactor is an electrical switch used for switching an electrical circuit on or off.

  • It is used to control electric motors, lighting, heating, and other electrical loads.

  • It consists of a coil, contacts, and an enclosure.

  • The coil generates a magnetic field that pulls the contacts together to close the circuit.

  • Examples include HVAC systems, elevators, and industrial machinery.

  • Contactor ratings are based on the amount of current they can handle and the voltage they can switch....read more

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Q5. What is MCB?

Ans.

MCB stands for Miniature Circuit Breaker. It is an electrical switch that automatically shuts off the electrical circuit during an overload or short circuit.

  • MCB is a type of circuit breaker that is commonly used in residential and commercial buildings.

  • It is designed to protect electrical circuits from damage caused by overloading or short circuits.

  • MCBs are available in different current ratings and can be easily replaced if they trip.

  • They are more reliable and faster in tripp...read more

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Q6. Electrical motor types

Ans.

Electrical motors are devices that convert electrical energy into mechanical energy. There are various types of electrical motors.

  • DC motors - used in appliances, toys, and automobiles

  • AC motors - used in industrial machinery and household appliances

  • Stepper motors - used in robotics and automation

  • Servo motors - used in precision control applications

  • Brushless DC motors - used in drones and electric vehicles

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Q7. What do you no rotating part of machine

Ans.

Rotating parts of a machine are components that move in a circular motion, such as motors, turbines, or fans.

  • Rotating parts are typically components like motors, turbines, fans, or rotating shafts.

  • Non-rotating parts include components like housings, casings, brackets, or stationary supports.

  • Non-rotating parts are usually fixed in place and provide support or protection for the rotating components.

  • Examples of non-rotating parts include the frame of a motor, the casing of a tur...read more

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Q8. High starting toque machine is

Ans.

A high starting torque machine is a type of motor that can produce a large amount of torque when starting up.

  • High starting torque machines are commonly used in applications where a large amount of torque is required at startup, such as in industrial machinery or electric vehicles.

  • These machines typically have special rotor designs or additional starting windings to provide the extra torque needed.

  • Examples of high starting torque machines include induction motors with double-c...read more

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Interview Process at House of Beauty

based on 8 interviews
1 Interview rounds
Technical Round
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