10+ Kotak Mahindara Life Insurance Interview Questions and Answers

Hydraulic refers to the use of fluids to transmit power or energy.

• Hydraulic systems use liquids such as oil or water to transmit power.

• Examples include hydraulic brakes in cars and hydraulic lifts in buildings.

• Failure can occur due to leaks, blockages, or mechanical issues.

• Regular maintenance and inspection can prevent failure and ensure proper functioning.

Speed can be controlled by adjusting the pressure of the fluid or gas that powers the system.

• Pressure can be increased or decreased to control the speed of a system.

• This is commonly used in hydraulic and pneumatic systems.

• For example, in a hydraulic system, increasing the pressure of the fluid can increase the speed of a cylinder.

• Similarly, in a pneumatic system, increasing the pressure of the gas can increase the speed of a piston.

• Proper calibration and monitoring of pressur...read more

PLC stands for Programmable Logic Controller. It is a digital computer used for automation of electromechanical processes.

• PLC is used to control and monitor industrial processes.

• It is programmed using ladder logic or other programming languages.

• PLC can be used for various applications such as controlling traffic lights, assembly lines, and HVAC systems.

• It can communicate with other devices and systems through various communication protocols.

• PLC has replaced traditional relay-...read more

3 phase power has three conductors carrying three alternating currents, while 1 phase power has only one conductor carrying one alternating current.

• 3 phase power is more efficient for high power applications

• 1 phase power is commonly used in residential buildings

• 3 phase power provides a more balanced power supply compared to 1 phase power

Transformer works on the principle of electromagnetic induction to transfer electrical energy between two or more circuits.

• Transformers consist of two coils of wire, known as the primary and secondary coils.

• When an alternating current flows through the primary coil, it creates a changing magnetic field around it.

• This changing magnetic field induces a voltage in the secondary coil, transferring electrical energy between the two coils.

• Transformers are used to step up or step do...read more

There are several types of transformers and bus bars used in electrical systems.

• Transformers can be classified based on their construction, voltage level, and application.

• Common types of transformers include power transformers, distribution transformers, and instrument transformers.

• Bus bars are used to distribute electrical power in a system and can be categorized as rigid or flexible.

• Examples of bus bar types include copper bus bars, aluminum bus bars, and laminated bus bars...read more

kW is a unit of real power while kVA is a unit of apparent power in electrical engineering.

• kW stands for kilowatts and represents the actual power consumed by a device or system.

• kVA stands for kilovolt-amperes and represents the total power in an electrical system, including both real and reactive power.

• The difference between kW and kVA is due to the presence of reactive power in the system.

• In an ideal system with unity power factor, kW and kVA would be equal.

• For example, a m...read more

Types of AC motors include induction motors, synchronous motors, and brushed and brushless DC motors.

• Induction motors: most commonly used type, simple design, reliable, low cost

• Synchronous motors: maintain constant speed, used in applications requiring precise speed control

• Brushed DC motors: use brushes to conduct current, simple design, easy to control speed

• Brushless DC motors: more efficient, longer lifespan, no brushes to wear out

The motor working process involves converting electrical energy into mechanical energy.

• Electricity is supplied to the motor, which creates a magnetic field.

• The magnetic field interacts with the motor's coils, causing them to rotate.

• The rotating coils generate mechanical energy, which can be used to power various devices.

• Different types of motors, such as AC motors and DC motors, have variations in their working processes.