Electrical Power Utilization and Traction (Institute Elective — Winter 2018

Explain four quadrant operation of a drive with suitable diagrams.

Explain electric drives and its classification in detail.

State the types of electric braking. Explain any one in detail.

Explain different methods of controlling speed of d.c. series motor.

State the methods of speed control of 3-∅ induction motor and explain any one method in detail.

Explain the terms dead weight, accelerating weight and adhesive weight in a locomotive. Explain the factors affecting specific energy consumption.

Compare AC and DC traction system.

Explain the trapezoidal speed – time curve with necessary equations.

Define average speed, crest speed and schedule speed and discuss the factors which affect schedule speed of a train.

Discuss the process of electric arc welding.

Give the classification of welding. Explain resistance welding.

Explain dielectric heating

Explain the design procedure of heating element.

State and explain square law of illumination

Explain electro deposition and explain factors affecting it.

Explain Incandescent lamp with necessary diagram.

Explain Faraday’s laws of electrolysis.