Tuesday, January 31, 2023

Dr. A.P.J. Abdul Kalam University BE IV SEM (EX) Power System-I [EX227T] June 2021 Question Paper

Dr. A.P.J. Abdul Kalam University

Bachelor of Engineering

Fourth Semester Main Examination, June-2021

Power System-I [EX227T]

Branch- EX

Time: 3:00 Hrs Max Marks 70

Note: (i) Attempt any five questions. All question carry equal marks.

(ii) Assume suitable data if necessary and state them clearly.

Q.1 (a) Explain an overview of Electrical Energy Generation.

(b) Comparison of isolated versus interconnected power system. Discuss the

Problems associated with modern large interconnected power system.

Q.2 (a) Write Conventional & non-conventional Sources of Energy.

(b) Short note on (any three) 1Diversity factor, 2capacity factor 3 utilization

factor,4 load factor,5 demand factor 6 Load curves,7 base load,8 peak load

Q.3 (a) Explain Л models of transmission line.

(b) Define concept of GMR and GMD.

Q.4 (a) Define bundle conductor& Charging current. What are basic different

between bundle conductor and Composite conductor?

(b) Define Skin and proximity effect. Explain its Causes and what is Ferranti


Q.5 (a) Classification of cables. Define Grading of cables. Define: - Heating &

Losses of cables - dielectric losses and sheath losses.

(b)Define transmission line and their representation. (Short, Medium & long)

Q.6 (a) Explain ABCD constants for symmetrical & asymmetrical network.

(b) Define Surge Impedance and loading. Define Tuned power lines.

Q.7 (a) How is the Transmission line Insulators classified? Causes of


(b) What is stringing Chart? What is its utility?

Q.8 (a) What is Sag? What is stringing Chart? What is its utility?

(b) Explain 3 phase, 3wire&4wire distribution system.

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