Sunday, November 29, 2015
S.B.
Roll No………
BASIC ELECTRICAL
ENGINEERING
2nd
Exam/ECE/0084/May’11
Time: 3 Hrs. Max.
Marks: 75
SECTION-A
Q1. Fill in
the blanks:
(i) 100w bulb
operates on 220v. It draws current ……….
(ii) Filaments
of electric bulbs are generally made of ………..
(iii) The
internal resistance of an ideal voltage source is ………
(iv) A passive
network is one which contains ………… sources of emf in it.
(v)
For maxy, power to transfer, internal resistance of the source should be equal
to………
(vi) In
constant voltage source output voltage remains same as …… varies.
(vii) The unit
of resistivity is ………..
(viii) Copper
and silver are ………. Materials.
(ix) The
plates are lead battery are made of …………
(x) The ratio
of max value to rms value is known as ……….
(xi) A
capacitor blocks ………… current.
(xii) In an
RCL series circuit, during resonance the ……… will be minium.
(xiii) Q
factor of a circuit is given by…………..
(xiv)
Inductive reactance XL is given by ………….
(xv) Steam
power plant uses…………..
SECTION-B
Note: Attempt any five questions.
Q2. (i) State and explain Kirchhoffs Voltage Law.
(ii) State
Nortan’s theorem.
(iii) Discuss
ideal current source.
(iv) Define
M.M.F, reluctance.
(v) Explain
faraday’s law of electromagnetic induction.
(vi) Explain
briefly primary and secondly cells.
(vii) What are
the causes and disadvantages of poor power factor.
SECTION-C
Note: Attempt any three questions.
Q3. Give the advantages and disadvantages of Ni-Cd batteries.
Q4. How emf is induced self and mutually?
Q5. Solve the circuit using Nortan’s theorem
Explain
with the help of block diagram the steam power plant.
Q6. Find the equivalent resistance of the following network
Or
Define
the following, with the help of suitable diagram.
-
Cycle
-
Time period
-
Frequency
-
Amplitude
-
Effective or rms value
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