Exam Details
| Subject | a. c. distribution & utilization | |
| Paper | ||
| Exam / Course | diploma engineering | |
| Department | ||
| Organization | Gujarat Technological University | |
| Position | ||
| Exam Date | May, 2018 | |
| City, State | gujarat, ahmedabad |
Question Paper
1/3
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING SEMESTER 4 • EXAMINATION SUMMER 2018
Subject Code: 340904 Date: 07-May-2018
Subject Name: A. C. Distribution Utilization
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Each question carry equal marks (14 marks)
Q.1
Describe different types of distributors in brief.
07
07
Classify substation as per their mounting and explain any one in detail.
Q.2
A single wire feeder AB of 300 meter is fed from A. At point C i.e 200m from sending end, the load is 100A at 0.707 lagging p.f. and at point B i.e 300m from sending end, the load is 200A at 0.8 lagging p.f.. The impedance of each section is (0.2 +j0.1) ohm/Km. Calculate the total voltage drop in the feeder.
07
A A C A B (0.2+j0.1)
07
Enlist the major equipments used in substation. Explain function of each.
OR
Discuss various types of bus-bar arrangements in substation. Draw key
07
2/3
diagram of single bus-bar with sectionalisation.
Q.3
State causes of low power factor and discuss its effects on various electrical systems.
07
07
State different methods of laying underground cable and explain any one in detail.
OR
Q.3
Compare synchronous condensor and static capacitor with refrence to power factor improvement.
07
07
Derive condition for most economic power factor.
Q.4
Write short note Electroplating
07
07
Explain the working principle of Induction heating and list its applications.
OR
Q.4
Describe factor affecting the good lighting scheme.
07
07
3/3
Compare group drive and individual drive.
Q.5
State laws of illumination. Explain inverse square law of illumination.
07
07
State the methods of speed control of three phase induction motor explain any one in detail.
OR
Q.5
Compare Arc welding and Resistance welding.
07
07
Discuss objectives of tariff. State factors affecting forming of tariff.
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING SEMESTER 4 • EXAMINATION SUMMER 2018
Subject Code: 340904 Date: 07-May-2018
Subject Name: A. C. Distribution Utilization
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Each question carry equal marks (14 marks)
Q.1
Describe different types of distributors in brief.
07
07
Classify substation as per their mounting and explain any one in detail.
Q.2
A single wire feeder AB of 300 meter is fed from A. At point C i.e 200m from sending end, the load is 100A at 0.707 lagging p.f. and at point B i.e 300m from sending end, the load is 200A at 0.8 lagging p.f.. The impedance of each section is (0.2 +j0.1) ohm/Km. Calculate the total voltage drop in the feeder.
07
A A C A B (0.2+j0.1)
07
Enlist the major equipments used in substation. Explain function of each.
OR
Discuss various types of bus-bar arrangements in substation. Draw key
07
2/3
diagram of single bus-bar with sectionalisation.
Q.3
State causes of low power factor and discuss its effects on various electrical systems.
07
07
State different methods of laying underground cable and explain any one in detail.
OR
Q.3
Compare synchronous condensor and static capacitor with refrence to power factor improvement.
07
07
Derive condition for most economic power factor.
Q.4
Write short note Electroplating
07
07
Explain the working principle of Induction heating and list its applications.
OR
Q.4
Describe factor affecting the good lighting scheme.
07
07
3/3
Compare group drive and individual drive.
Q.5
State laws of illumination. Explain inverse square law of illumination.
07
07
State the methods of speed control of three phase induction motor explain any one in detail.
OR
Q.5
Compare Arc welding and Resistance welding.
07
07
Discuss objectives of tariff. State factors affecting forming of tariff.
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- a. c. distribution & utilization
- a.c. distribution & utilization
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- advanced computer programming
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- advanced mathematics(group-2)
- aircraft maintenance-ii
- aircraft navigation and radio system
- aircraft performance & stability
- applied electronics and instrumentation
- applied science-i (physics)
- applied science-ii(chemistry)
- architectural drawing-ii
- automation in fabrication technology
- automobile electrical system
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- basic automobile design
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- basic design
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- communication skill
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- costing estimation & management
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- elements of civil engineering
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- english communication and architecture vocabulary
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- fabrication technology
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- fundamental of chemical engineering reactions & thermo dynamics
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