Jindal Power Overhead Crane Operator Interview Questions and Answers for Freshers

Parameters of transmission line include resistance, inductance, capacitance, and conductance.

• Resistance: opposition to the flow of current

• Inductance: ability to store energy in a magnetic field

• Capacitance: ability to store energy in an electric field

• Conductance: ability to conduct electric current

• Examples: coaxial cable, waveguide, twisted pair cable

Hysteresis curve is a graphical representation of the relationship between magnetic field strength and magnetization of a material.

• It shows the lag between the magnetic field and the magnetization of a material.

• It is used to study the magnetic properties of materials.

• It is commonly used in the design of magnetic circuits and devices.

• Examples include transformer cores, magnetic storage devices, and electric motors.

• The s...read more

We use step-up transformers to reduce power loss during transmission by increasing voltage and decreasing current.

• Step-up transformers increase voltage and decrease current, which reduces power loss during transmission.

• This is because power loss is proportional to the square of the current, so reducing current reduces power loss.

• For example, power is transmitted over long distances at high voltages (e.g. 500 kV) to red...read more

Power factor is the ratio of real power to apparent power in an AC circuit.

• Power factor is a measure of how efficiently electrical power is being used.

• It ranges from 0 to 1, with 1 being the most efficient.

• A low power factor can result in higher energy costs and equipment damage.

• Capacitors can be used to improve power factor.

• Power factor is important in industries where large amounts of electrical power are used.

Service tax has been replaced by GST since July 2017. NPV is still relevant for investment decisions.

• Service tax has been subsumed under GST since July 2017

• NPV stands for Net Present Value and is used to evaluate investment decisions

• NPV takes into account the time value of money and calculates the present value of future cash flows

• NPV is still relevant and widely used in finance and investment analysis

A multimeter is an electronic device used to measure voltage, current, and resistance in electrical circuits.

• It can measure AC and DC voltage

• It can measure AC and DC current

• It can measure resistance

• It can also measure other electrical parameters such as capacitance and frequency

• It typically has a digital display for easy reading

• Examples of multimeter brands include Fluke, Klein Tools, and Extech

I am seeking new challenges and growth opportunities in my career.

• Seeking new challenges and growth opportunities

• Looking for a change to broaden my skillset

• Interested in working with a new team and learning from their expertise

The fuse rating for a 22 kW motor depends on the starting current and the type of motor.

• The starting current of the motor should be considered when selecting the fuse rating.

• The type of motor (e.g. induction, synchronous) also affects the fuse rating.

• Consult the motor manufacturer's specifications or a qualified electrician for the appropriate fuse rating.

• A general rule of thumb is to use a fuse rating of 125% of the m

Star delta starter is used to reduce starting current and torque in induction motors.

• Reduces starting current and torque in induction motors

• Protects motor windings from damage

• Increases motor lifespan

• Used for high power motors

• Commonly used in industries such as oil and gas, mining, and manufacturing

The unit of vibration is Hertz (Hz).

• Vibration is a measure of the frequency of oscillation of a mechanical or electrical system.

• Hertz is the unit of frequency, defined as one cycle per second.

• Vibration can be measured using instruments such as accelerometers and vibrometers.

• Vibration is an important consideration in the design and maintenance of electrical systems.

• Examples of electrical systems that may experience vibr...read more