Download DBATU (Dr. Babasaheb Ambedkar Technological University) B Tech 2019 March (Bachelor of Technology) 2nd Semester Power System I Question Paper
w
DR. EABASAHEB .AMBEDKAR TECHNOLOGICAL?UNIVERSITY, LONERE
I Mid Semester Efamination? March. 2019
Course: B. Techin Electrical,Elect10n1cs and Power EngineeringSema II
Subject Name: Power system: lSubject Code: BTEEC402 ?
Max Marks:20 Date:- 12/03/2019 Duration:? 1 Hr.
Instructions to the Students:
!. Please cheek whether you have got the right question paper ~
2. Clearly mention the main question number along with the sub questions.
3. Question No. 1 is compulsory. '
4. Figures carries marks.
_ Marks
Q. 1 Select the right choice from the given answers 6
A The conductor carries more cur1ent on the surface in comparison to its core This phenomenon IS
called the
a) Skin effect b) Fer1ant1 effect
c) Corona d) Lenz 3 effect
B The major heat loss In a steam power station occurs in ........
a Heat chamber b. Penstock
eSpillways d.Condenser
C The thermal ef?ciency of a steam power station is .......
31.38% b.28%
c 40% d. 45% A
I) The power output from a hydro-electric power plant depends on three pa1ameters ........
a Head type and dam of discharge
b. iIead,discha1ge and ef?ciency of the system
ch?f?ciency Qt?the systenutype ofdraft tube and type of turbine used
dJpre of dam,discha1?ge arid type ofcatchment area
E What is the maximum transmission voltage . substation in India:
a)400kV ? '
b)500kV
c)750i
F Transposition of transmission line is done to
a) Reduce corona
h) Balance line voltage drop
c) Reduced skin effect
d) Reduce hne loss
Q.2 Solve Any T wo of the following. 3X2
(A) A single phase transmission line has two parallel conductors 3 meters apart , radius of each conductor
being lcm. Calculate the capacitance ot?the line per km.
(B) De?ne the terms: a.Load curve b. Demand factor, 0. Diversity factor
? (C) How to increase the ef?ciency of plant? Explain plant economics.
This post was last modified on 21 January 2020