Q.1
14 Marks(a)
What is a role of single line diagram (SLD) in electrical circuits?
(b)
Discuss the role of MCB & ELCB in residential wiring systems and explain their importance.
(c)
What are the general rules of residential wiring.
Gujarat Technological UniversitySummer 2025 examination
GTU 3170920 Industrial Electrical Systems Summer 2025 Question Paper & PDF
B.E. · Electrical Engineering · Semester 7 · Subject code 3170920
- Total
- 70 marks
- To pass
- 23 marks (33%)
- Duration
- 2.5 Hours 2:30 PM – 5:00 PM
- Questions
- 5 with internal choice
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3 of 25 questions on this paper were also asked in other years. Each is marked below with the years it appeared.See all 3 repeated 3170920 questions, most asked first
Q.2
14 Marks(a)
What are the different types of tariff structures used for residential connections?
(b)
What are the key considerations in the selection process of an ELCB’s rating for industrial applications?
(c)
Discuss the factor that effects the sizing of the wire.
OR
(c)
Explain the electrical earthing system for residential building
Q.3
14 Marks(a)
Define the following term:
i)Illumination
ii)Luminous intensity
iii)specific
consumption
(b)
Discuss the operation of fluorescent lamp
(c)
The illumination at a point on a working plane directly below the lamp is to be 60 lumens/m2. The lamp gives 130 CP uniformly below the horizontal plane. Determine:
i)The height at which lamp is suspended (h)
ii)The illumination at a
point on the working plane 2.8 m away from the vertical axis of the lamp.
OR
(a)
Define the following terms
i)Glare
ii)Candle Power and
iii)Space Hight Ratio.
(b)
A 200 V lamp takes a current 1.2 A. it produces a total flux of 2860 lumens. Calculate the
i)MSCP of lamp
ii)efficiency of lamp.
(c)
Explain the various lighting schemes.
Q.4
14 Marks(a)
What are the effects of poor power factor on distribution system?
(b)
What are the characteristics that set low-tension (LT) motors apart from high- tension (HT) motors?
(c)
Discuss the essential protective components of industrial substations.
OR
(a)
Summarize the different types of UPS and their specific applications.
(b)
What are the essential factors in transformer selections?
(c)
Explain significant of the continuous power, prime power and standby power related with standby generator in power system distributions
Q.5
14 Marks(a)
Draw the block diagram of PLC.
(b)
Make list of the factors included in substation designing.
OR
(b)
Explain the PLC based speed control system of electrical motor.
More Industrial Electrical Systems papers
Questions repeat across sessions. Working through two or three papers shows you which topics GTU asks most.
Other Semester 7 subjects
BE Electrical
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About this paper
Official Gujarat Technological University (GTU) examination paper for Industrial Electrical Systems (Summer 2025, B.E. · Electrical Engineering, Sem 7). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.