Western Coalfields Trainee Interview Questions and Answers

Estimating wiring and connections in a building involves assessing the electrical needs and layout of the space.

• Assess the electrical needs of the building, including the number of outlets, lighting fixtures, and appliances.

• Determine the layout of the building and the best routes for wiring to avoid hazards and maximize efficiency.

• Consider the type of wiring needed, such as copper or aluminum, and the appropriate gauge...read more

Cables that transfer power are of different types depending on the application.

• AC power cables

• DC power cables

• Coaxial cables

• Ethernet cables

• USB cables

• HDMI cables

• Optical fiber cables

Single phase motors are commonly used in household appliances and small machinery.

• Split-phase motor

• Capacitor-start motor

• Capacitor-run motor

• Shaded-pole motor

Distribution transformer rating is the maximum power it can handle without overheating.

• Distribution transformer rating is expressed in kVA (kilovolt-ampere).

• It is important to choose the right rating for the transformer based on the load requirements.

• The rating of a transformer can be determined by calculating the load requirements of the system it is being installed in.

• For example, if the load requirement is 500 kVA, ...read more