In DC generator, we use commutator, having no. of segments.
Then how it is possible to get a half wave of voltage and
current for half rotation of armature?
i have been selected for the HAL interview? what type of
questions can i expect? technical or personal? pls help me
in this regard and mail to sankar_aji@yahoo.co.in
question no. 4======Give a brief description of the
following terms:
a) Play head
b) Symbol
c) Tweening
d) ActionScript
e) Frame rate
f) Library panel
g) Masking
h) Context – sensitive Property Inspector
i) Bandwidth Profiler
j) Frame Label
which are the criterias needed to select the kind of
neutral earthing(solid earthing,resistance earthing,etc.)
at various voltage levels in electrical distribution?
why is it that the HT motors & motors having very low kW
rating(<1kW) have windings connected in STAR, whereas the
motors having in between kW ratings have DELTA connected
windings??
WHATS THE NEED OF CT INPUTFOR AN VAPM TYPE METERING PT FUSE
FAILURE RELAY
49
Whats the minimum value for I.R. that can be allowed for HT
& LT alternators for operation?
37
i want to know how to determine that a surge arrester
work properly in 11kv system. and how to test a 12kv surge
arrester
13
why are we using resistor in NGR ?
72
what is the min persentage for applying group exams for
B.tech students
90
Assume a condition such that two motors of rating
6.6kv,415v are connected to blower,so tell me which motor
draw large current give appropriate reason?
I currently use 17-7 PH stainless which is hardened to
condition CH after forming. raw matl is .1.75"X .12"
X .008". Its main usage after hardening is silicon wafer
retainer where it's contantly cycled up and down to putin
and remove wafer after 40-60 sec process at 400C temp. At
this high temperature this part seemed to deform after a a
couple of hundred wafer which is what it was designed for
in the first place. THere is a proposal to go to a
different material to increase lifeline of this part. My
question is..... can 321 SST be a plugin replacement. I
know this has a higher temp rating but how about its
forming characteristics, will it have spring properties,
and wont become brittle after prolonged exposure to 400C.
does the Trivector Meter of three phase automatically takes
care of the low power factor and gives the reading
accordigly or it does not take care of the Power factor
while giving the readings please explain
14
hi if anybody got model questions for cpcl Grade'A'
electrical engineer position.send it to my mail please
krishkumar22@gmail.com
68
I AM APPERING FOR RRB EXAM FOR SECTION ENGINEER I REQUEST U
TO PLZ FORWORD THE PAPER PATTERN AND EVEN PREVIOUS QUESTION
PAPER to stamil230@gmail.com
hai...i need the interview questions of php...its very urgent
100
how to select the automotive wire size by mathematical
calculation. for xenon headlamp with ballast. the ballast
given data voltage 10-17v,current permenant 6amp, run up
phase is 15amp, peak at swicth on max 400micro sec is
40amp.the sum of cable resistance is 150mohm.please provide
referenc document if any for relating the peak at switch on
current,time & wire wire size
explain how to protect high rise building from the risk of
lighting.
15
MY generator water cooler inlet line height - 11 mtr
inlet water line height - 7 mtr
water come into the line from overhead tank, O/H tank
height - 20 mtr
the first tapping in the inlet line is 2" line which down
to 4 mtr level plateform., second tapping in inlet water
line goes to a pump 6" line installed at 4 mtr level
plateform, pump capacity 200m3/hr, head- 30 mtr, hp-40. the
outlet of pump of 6" water line connected to a header of 6
mtr long of 6" line, on this header the six tapping are
connected, 4 nos. 3" line goes to 11 mtr height water
cooler the pressure of the line is 0.15 to 0.25 kg/cm2, 2"
and 4" pipe line connected to a cooler at 4 mtrlevel
plateform.
my question is, at 11 mtr height level the quantity of
water and flow is not sufficient for my cooler, the temp.
of cooler is rises much more. you are requested to suggest
the modification of pipe line/ pump for take more water
flow and pressure (desired pressure is 1 kg/cm2)
along with your userid / name. ThanQ
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