GTU BE 2019 Summer Question Papers || Gujarat Technological University
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BE - SEMESTER-VIII (OLD) EXAMINATION - SUMMER 2019
Subject Code: 180902
Date: 09/05/2019
Time: 10:30 AM TO 01:00 PM
Total Marks: 70
Instructions:
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q1 (a) State and explain advantages of electric traction system 07
(b) Explain the different methods of speed control of D.C. shunt motor. 07
(b) Classify the different methods for starting of 3-ph squirrel cage induction motor. Explain DOL starter with neat sketch. 07
OR
(b) Draw and explain the torque speed characteristics of 3-ph induction motor. 07
Q3 (a) Define average speed, crest speed and schedule speed and discuss the factors which affect schedule speed of a train 07
OR
(b) Explain coefficient of adhesion and factors affecting the coefficient of adhesion. 07
Q4 (a) Draw and explain the block diagram of electric locomotive. 07
(b) Classify electric welding and Explain resistance welding. 07
(b) Explain direct arc furnace with neat sketch and give its applications. 07
Q5 (a) Explain dielectric heating. State applications of dielectric heating. 07
(b) Explain power supply for arc welding. 07
OR
(b) State and explain laws of illumination. 07
OR
(b) Explain fluorescent lamp with diagram. 07
Explain the following terms:
2) Plane angle
3) Candle power.
4) Lumen
FirstRanker.com
BE - SEMESTER-VIII (OLD) EXAMINATION - SUMMER 2019
Subject Code: 180902
--- Content provided by FirstRanker.com ---
Subject Name: Electrical Power UtilizationDate: 09/05/2019
Time: 10:30 AM TO 01:00 PM
Total Marks: 70
Instructions:
--- Content provided by FirstRanker.com ---
1. Attempt all questions.2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q1 (a) State and explain advantages of electric traction system 07
(b) Explain the different methods of speed control of D.C. shunt motor. 07
--- Content provided by FirstRanker.com ---
Q2 (a) Explain regenerative breaking of DC motor. 07(b) Classify the different methods for starting of 3-ph squirrel cage induction motor. Explain DOL starter with neat sketch. 07
OR
(b) Draw and explain the torque speed characteristics of 3-ph induction motor. 07
Q3 (a) Define average speed, crest speed and schedule speed and discuss the factors which affect schedule speed of a train 07
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(b) A train is required to run between two stations 1.6 km apart at an average speed of 40 kmph. The run is to be made to a simplified quadrilateral speed- time curve. If the maximum speed is to be limited 64 kmph, acceleration to 2 kmphps and coasting and breaking retardation to 0.16 kmphps and 3.2 kmphps respectively, determine the duration of acceleration, coasting and braking periods. 07OR
(b) Explain coefficient of adhesion and factors affecting the coefficient of adhesion. 07
Q4 (a) Draw and explain the block diagram of electric locomotive. 07
(b) Classify electric welding and Explain resistance welding. 07
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OR(b) Explain direct arc furnace with neat sketch and give its applications. 07
Q5 (a) Explain dielectric heating. State applications of dielectric heating. 07
(b) Explain power supply for arc welding. 07
OR
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(a) Explain process of electroplating. 07(b) State and explain laws of illumination. 07
OR
(b) Explain fluorescent lamp with diagram. 07
Explain the following terms:
--- Content provided by FirstRanker.com ---
1) Luminous intensity.2) Plane angle
3) Candle power.
4) Lumen
FirstRanker.com
--- Content provided by FirstRanker.com ---
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