BHARAT TECHNO PLAST Interview Questions and Answers

Electrical wiring diagram used to start a motor with reduced voltage.

• Star delta wiring is used to reduce the starting current of a motor.

• It involves connecting the motor windings in a star configuration during starting and then switching to a delta configuration once the motor is up to speed.

• This reduces the voltage applied to the motor during starting, which in turn reduces the starting current.

• The wiring diagram typi...read more

Power factor is used by Company 1 to improve energy efficiency and reduce electricity costs.

• Improves energy efficiency by reducing reactive power consumption

• Reduces electricity costs by avoiding penalties for low power factor

• Helps in optimizing the use of electrical equipment

• Improves voltage stability and reduces power losses

• Example: Company 1 uses power factor correction capacitors to improve power factor

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Chillers are devices that remove heat from a liquid via a vapor-compression or absorption refrigeration cycle.

• Chillers use refrigerants to absorb heat from a liquid and transfer it to the environment

• There are two types of chillers: vapor-compression and absorption

• Vapor-compression chillers use a compressor to circulate refrigerant through the system

• Absorption chillers use a heat source to drive the refrigeration cycle

• C...read more

Yellow mark problem components to indicate potential issues or defects.

• Yellow marks are used to identify components that may have defects or issues.

• This helps in identifying potential problems during quality control checks.

• Yellow marks can also be used to indicate components that need further inspection or testing.

• Examples include electronic components, mechanical parts, and structural components.

• Yellow marks are a com...read more

Tonnage problem refers to the calculation of the maximum weight a ship can carry safely.

• It is important to calculate tonnage to ensure the safety of the ship and crew.

• Tonnage is calculated based on the ship's size, volume, and weight capacity.

• Overloading a ship can lead to instability, sinking, and loss of life.

• Tonnage is also used to determine port fees and taxes.

• Tonnage can be measured in gross tonnage or net tonnage...read more

Injectors are used to deliver fuel into the combustion chamber of an engine.

• Injectors ensure precise fuel delivery for optimal engine performance.

• They help improve fuel efficiency and reduce emissions.

• Injectors can become clogged or malfunction, leading to engine problems.

• Examples of injectors include diesel injectors, gasoline injectors, and direct fuel injectors.