BEE
Guidelines for writing
assignment:
1. Read the
entire unit thoroughly before writing the assignment
2. Don’t copy the
assignment from the others.
3. Write the
assignment in separate note book (do not write in papers, do not write in class
work)
4. During the
evaluation of the assignment questions will be asked from the corresponding
chapter.
5. Strictly
instructed to submit the assignment on or before scheduled time. Assignments
will not be accepted after schedule time.
6. Assignment
will be evaluated for 10 marks.
ASSIGNMENT-1 (unit-1:
Introduction to electrical engineering)
NOTE: Submit the assignment on or before 05-08-2013
1. (a) write about electrical
engineering concepts that you come across in daily life(not more than two
pages)
(b) A copper wire is stretched so that its
length is increased by 0.1%. What is the percentage change in its resistance?
2. (a)
Explain about basic circuit components
(b) A length of wire has a resistance
of 4.5 ohms. Find the resistance of another wire of the same material three
times long and twice the cross-sectional area
3. (a) State
and explain ohm’s law and discuss where it fails.
( b ) an electric radiator is
required to dissipate 1KW when connected to a 230V supply. If the coils of the radiator
are of wire 0.5mm in diameter having resistivity of 60µΩ-cm, caluculate the
necessary length of the wire
4.(a)
Explain Laws of resistance (or) explain the different factors on which the
resistance is dependent
(b) Three resistances of 5 ohms, 10 ohms and
15 ohms are connected in parallel. If the current in 10 ohms resistance is 3 A,
What is the current in other resistors and total current? Also determine the
voltage applied to the circuit
5. (a) state and explain Kirchhoff’s laws
(b ) Two coils connected in
parallel across 100v Dc supply, takes 10A current from the supply. Power
dissipated in one coil is 600W.find
(a) What is the resistance of the
coil
(b) What is the current flowing
through that coil
(c) What is the current in the other
coil
(d) What is the resistance of the
other coil
6 . Compare
conductors, insulators, semiconductors at least in four aspects