eeeguide

EEEGUIDE.COM - Online Electrical and Electronics Study

Electrical Power Engineering Multiple Choice Questions and Answers (MCQs) Part 2

Electrical Power Engineering Multiple Choice Questions and Answers (MCQs) Part 2:  52. The pair used for frequency converters is (a) squirrel cage induction motor and synchronous motor. (b) slip-ring induction motor and synchronous motor. (c) slip-ring induction motor and squirrel cage induction motor. (d) all of above. Answer : (a) squirrel cage induction motor and …

Electrical Power Engineering Multiple Choice Questions and Answers (MCQs) Part 2 Read More »

Electrical Power Engineering Multiple Choice Questions and Answers (MCQs) Part 1

Electrical Power Engineering Multiple Choice Questions and Answers (MCQs) Part 1: 1. The basic elements of an electric drive are : (a) electric motor and the transmission system. (b) electric motor, the transmission and control system. (c) the transmission and control system. (d) electric motor and conversion equipment. Answer : (b) electric motor, the transmission …

Electrical Power Engineering Multiple Choice Questions and Answers (MCQs) Part 1 Read More »

Power Supply for Electric Traction Interview Questions and Answers

Power Supply for Electric Traction Interview Questions and Answers: 1. What is the arrangement of power supply on Kanpur-Tundla section ? Ans. 132 kV supply is taken at one point from the supply authorities and then it is distributed by the railway authorities. 2. Name the current collection systems employed for electric locomotives, tramways or …

Power Supply for Electric Traction Interview Questions and Answers Read More »

Braking and Mechanical Considerations Interview Questions and Answers

Braking and Mechanical Considerations Interview Questions and Answers: 1. Why ordinary mechanical braking cannot be totally replaced by electrical braking ? Ans. Because electric braking cannot hold the vehicle stationary. 2. On what factors does the amount of energy returned to the line depend ? Ans. The amount of energy returned to the line depends …

Braking and Mechanical Considerations Interview Questions and Answers Read More »

Control of Traction Motors Interview Questions and Answers

Control of Traction Motors Interview Questions and Answers: 1. The resistors employed for control of traction motors are designed for short-time rating. Why ? Ans. Because control resistors are required only during starting of traction motors. 2. Under what conditions is field weakening adopted for controlling the speed of a dc series traction motor ? …

Control of Traction Motors Interview Questions and Answers Read More »

Electric Traction Motors Interview Questions and Answers

Electric Traction Motors Interview Questions and Answers: 1. Why the magnetic circuit of a traction motor is not made of cast iron ? Ans. Because cast iron cannot withstand continuous vibrations but traction motors operate in extremely severe service conditions. 2. Why the traction motor must be small in overall dimensions specially in its overall …

Electric Traction Motors Interview Questions and Answers Read More »

Train Movement and Energy Consumption Interview Questions and Answers

Train Movement and Energy Consumption Interview Questions and Answers: 1. What is meant by speed-time curve ? Ans. The curve drawn between speed and time taking speed on the Y-axis and time on the X-axis is known as speed-time curve. 2. Define terms ‘coasting’ and ‘braking’. Ans. Coasting. At the end of free running period …

Train Movement and Energy Consumption Interview Questions and Answers Read More »

Traction Systems Interview Questions and Answers

Traction Systems Interview Questions and Answers: 1. Why steam engine drive is not suitable for urban and suburban services where distance between stations is small ? Ans. Because of low coefficient of adhesion it is not possible to have acceleration and retardation with steam engine drive as high as with electric drive. Steam engine drive …

Traction Systems Interview Questions and Answers Read More »

Refrigeration and Air Conditioning Interview Questions and Answers

Refrigeration and Air Conditioning Interview Questions and Answers: 1. What is practical unit of refrigeration ? Define it. Ans. Tonne of refrigeration (TR) is the practical unit of refrig­eration and is defined as the amount of refrigeration effect produced by the uniform melting of one tonne (1,000 kg) of ice from and at 0°C in …

Refrigeration and Air Conditioning Interview Questions and Answers Read More »

Electrolytic Processes Interview Questions and Answers

Electrolytic Processes Interview Questions and Answers: 1. What is electrolysis ? Ans. The breaking of a substance (known as electrolyte) into ions by flow of electric current through it is known as electrolysis. 2. What happens when an electric current is passed through solution of copper sulphate ? Ans. When an electric current is passed …

Electrolytic Processes Interview Questions and Answers Read More »

Scroll to Top