CS/B.TECH(AUE)/SEM-6/AUE-601/2012
2012
AUTOMOTIVE ELECTRICAL SYSTEMS &
ELECTRONICS
Time Allotted : 3 Hours Full Marks : 70
The figures in the margin indicate full marks.
Candidates are required to give their answers in their own words as
far as practicable.
GROUP – A
( Multiple Choice Type Questions )
1. Choose the correct alternatives for any ten of the following :
10 × 1 = 10
i) The armature of a DC machine is made of silicon steel
lamination to
a) reduce hysteresis loss only
b) reduce eddy current loss only
c) increase permeability
d) reduce both hysteresis and eddy current loss.
ii) In case of horn, the number of vibrations per second
determines the
a) frequency of the sound
b) pitch of the sound
c) loud warning signal
d) all of these.
iii) The direction of DC shunt motor can be reversed by
interchanging
a) supply terminals
b) both armature terminals and field terminals
c) either of armature or field terminals
d) none of these.
iv) The commutator of DC machine is made of