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Recent questions tagged on
asked
May 10, 2020
by
anonymous
Transformer on DC
Write about transformer on DC.
Last answer:
Transformer on DC : Transformer cannot work on DC. Transformer works on electromagnetic induction principle. Electromagnetic induction principle means when flux linking with coil changes and EMF induced in it ... winding insulation will burn. https://youtu.be/TVp_0fIfxqY
transformer
on
dc
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232
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1
answer
asked
May 7, 2020
by
anonymous
State two applications of : (i) PVC paper (ii) Porcelain with type of class based on withstand temperature is insulating material.
State two applications of : (i) PVC paper (ii) Porcelain with type of class based on withstand temperature is insulating material.
Last answer:
(i) Application of PVC paper : 1. It is used in slot lining or motor winding insulation purpose 2. For Insulation of Transformer winding (ii) Application of Porcelain : 1. Mainly used for manufacturing ... on withstand temperature : * H' & C' Class of insulation i e. 180° and above 180°C
state
two
applications
of
i
pvc
paper
ii
porcelain
with
type
class
based
on
withstand
temperature
is
insulating
material
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1
answer
asked
May 7, 2020
by
anonymous
List any four accessories used on lathe.
List any four accessories used on lathe.
Last answer:
The various accessories used in lathe are as follows. 1) Lathe centers 2) Carriers or driving dog 3) catch plates 4) Chucks 5) Face plates 6) Angle plates 7) Mandrels 8) Rests
list
any
four
accessories
used
on
lathe
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44
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1
answer
asked
May 6, 2020
by
anonymous
State the impact of inductance and resistance on transmission line performance
State the impact of inductance and resistance on transmission line performance
Last answer:
Impact of inductance on transmission line: 1) It causes IXL drop in transmission line which affects regulation. 2) It is the only parameter which decides power transmission capacity of line i. ... is very small, it causes losses, temperature rise& poor voltage regulation so it cannot be neglected
state
the
impact
of
inductance
and
resistance
on
transmission
line
performance
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84
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1
answer
asked
May 3, 2020
by
anonymous
Analyze the effect of supply voltage on performance of LED as regards current, Lumen output, efficacy and life.
Analyze the effect of supply voltage on performance of LED as regards current, Lumen output, efficacy and life.
Last answer:
1) Effect on Current:- In LED current depends upon supply voltage, if voltage get changes then current also change but this change in current will be control by resistors which are connected in series. 2) ... 4) Effect on Life:- If supply voltage is not stable then life of LED get reduced.
analyze
the
effect
of
supply
voltage
on
performance
led
as
regards
current
lumen
output
efficacy
and
life
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1
answer
asked
May 3, 2020
by
anonymous
Compare the salient features of LED and CFL based on: i] Lamp Efficiency ii] Life span
Compare the salient features of LED and CFL based on: i] Lamp Efficiency ii] Life span
Last answer:
Parameter LED CFL Lamp Efficiency High (more than 70 lumen per watt) Comparatively less (50-60 lumen per watt) Life span (in working hours) 10000 3000
compare
the
salient
features
of
led
and
cfl
based
on
i
lamp
efficiency
ii
life
span
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37
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1
answer
asked
May 2, 2020
by
anonymous
With the help of N-channel JFET describe the effect of input voltage VGS on output current ID.
With the help of N-channel JFET describe the effect of input voltage VGS on output current ID.
Last answer:
Working of N channel FET: * When a voltage is applied between the drain and source with a DC supply (VDD), the electrons flows from source to drain through narrow channel ... where the channel gets completely blocked and the drain current becomes zero is called pinch- off voltage.
with
the
help
of
n-channel
jfet
describe
effect
input
voltage
vgs
on
output
current
id
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46
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1
answer
asked
Apr 27, 2020
by
anonymous
Explain the procedure to perform Short Circuit test on single phase transformer with circuit diagram.
Explain the procedure to perform Short Circuit test on single phase transformer with circuit diagram.
explain
the
procedure
to
perform
short
circuit
test
on
single
phase
transformer
with
diagram
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68
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0
answers
asked
Apr 21, 2020
by
anonymous
Brake test on DC series motor
Brake test on DC series motor
Last answer:
.embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
brake
test
on
dc
series
motor
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0
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155
views
2
answers
asked
Apr 16, 2020
by
anonymous
Explain with neat circuit diagrams the procedures to perform no load and blocked rotor tests on three phase induction motor
Explain with neat circuit diagrams the procedures to perform no load and blocked rotor tests on three phase induction motor.
no
load
and
blocked
rotor
tests
on
three
phase
induction
motor
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85
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0
answers
asked
Apr 16, 2020
by
anonymous
Explain the need and steps to conduct the reduced voltage running up test on the three phase induction motor.
Explain the need and steps to conduct the reduced voltage running up test on the three phase induction motor.
explain
the
need
and
steps
to
conduct
reduced
voltage
running
up
test
on
three
phase
induction
motor
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0
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57
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0
answers
asked
Aug 17, 2019
by
anonymous
State one application of clip on meter.
State one application of clip on meter.
Last answer:
Clip-on meter is used to measure the High value AC current without breaking the circuit Or without opening the circuit.
clip
on
meter
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25
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1
answer
asked
May 21, 2019
by
anonymous
Problem on capacitor
Problem on capacitor
Last answer:
Problem on capacitor 1 : https://youtu.be/ZyT3WOFN8fs Problem on capacitor 2 : https://youtu.be/JBwEfekvutE Problem on capacitor 3 : https://youtu.be/E1lhIn5t8Mo Problem on capacitor 4 : https://youtu.be/yl651f4IUfg
problem
on
capacitor
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0
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108
views
1
answer
asked
May 21, 2019
by
anonymous
Problems on electrical power and energy
Problems on electrical power and energy
Last answer:
Problem on electrical power and energy 1 : https://youtu.be/ZvWHuMdmv9g Problem on electrical power and energy 2 : https://youtu.be/19IZMc6U2vs Problem on electrical power and energy 3 : https ... : https://youtu.be/iYqGIwA919A Problem on electrical power and energy : https://youtu.be/iWnWQz_mzHk
problems
on
electrical
power
and
energy
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0
dislike
2.5k
views
1
answer
asked
May 21, 2019
by
anonymous
Problems on resistance and resistivity
Problems on resistance and resistivity
Last answer:
Problem on resistance and resistivity 1 : https://youtu.be/OqavD7OlZUs Problem on resistance and resistivity 2 : https://youtu.be/0eo8VO8cpwk Problem on resistance and resistivity 3 : https:// ... https://youtu.be/3neLRCTz0RQ Problem on resistance and resistivity 13 : https://youtu.be/vBCkvPOiztY
problems
on
resistance
and
resistivity
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90
views
1
answer
asked
May 20, 2019
by
anonymous
Problem on temperature coefficient of resistance 3
Problem on temperature coefficient of resistance 3
Last answer:
Problem on temperature coefficient of resistance 3
problem
on
temperature
coefficient
of
resistance
3
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0
dislike
50
views
1
answer
asked
May 20, 2019
by
anonymous
Problem on temperature coefficient of resistance 2
Problem on temperature coefficient of resistance 2
Last answer:
Problem on temperature coefficient of resistance 2
problem
on
temperature
coefficient
of
resistance
2
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0
dislike
51
views
1
answer
asked
May 19, 2019
by
anonymous
Problem on temperature coefficient of resistance 1
Problem on temperature coefficient of resistance 1
Last answer:
Problem on temperature coefficient of resistance 1
problem
on
temperature
coefficient
of
resistance
1
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0
dislike
51
views
1
answer
asked
May 19, 2019
by
anonymous
Problem on resistance and resistivity 13
Problem on resistance and resistivity 13
Last answer:
Problem on resistance and resistivity 13
problem
on
resistance
and
resistivity
13
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0
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60
views
1
answer
asked
May 19, 2019
by
anonymous
Problem on resistance and resistivity 12
Problem on resistance and resistivity 12
Last answer:
Problem on resistance and resistivity 12
problem
on
resistance
and
resistivity
12
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0
dislike
49
views
1
answer
asked
May 19, 2019
by
anonymous
Problem on resistance and resistivity 11
Problem on resistance and resistivity 11
Last answer:
Problem on resistance and resistivity 11
problem
on
resistance
and
resistivity
11
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0
like
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0
dislike
44
views
1
answer
asked
May 19, 2019
by
anonymous
Problem on resistance and resistivity 10
Problem on resistance and resistivity 10
Last answer:
Problem on resistance and resistivity 10
problem
on
resistance
and
resistivity
10
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0
like
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0
dislike
44
views
1
answer
asked
May 19, 2019
by
anonymous
Problem on resistance and resistivity 9
Problem on resistance and resistivity 9
Last answer:
Problem on resistance and resistivity 9
problem
on
resistance
and
resistivity
9
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0
like
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0
dislike
40
views
1
answer
asked
May 18, 2019
by
anonymous
Problem on resistance and resistivity 8
Problem on resistance and resistivity 8
Last answer:
Problem on resistance and resistivity 8
problem
on
resistance
and
resistivity
8
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0
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0
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66
views
1
answer
asked
May 18, 2019
by
anonymous
Problem on resistance and resistivity 7
Problem on resistance and resistivity 7
Last answer:
Problem on resistance and resistivity 7
problem
on
resistance
and
resistivity
7
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0
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0
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52
views
1
answer
asked
May 18, 2019
by
anonymous
Problem on resistance and resistivity 6
Problem on resistance and resistivity 6
Last answer:
Problem on resistance and resistivity 6
problem
on
resistance
and
resistivity
6
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0
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0
dislike
50
views
1
answer
asked
May 18, 2019
by
anonymous
Problem on resistance and resistivity 5
Problem on resistance and resistivity 5
Last answer:
Problem on resistance and resistivity 5
problem
on
resistance
and
resistivity
5
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0
like
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0
dislike
57
views
1
answer
asked
May 18, 2019
by
anonymous
Problem on resistance and resistivity 4
Problem on resistance and resistivity 4
Last answer:
Problem on resistance and resistivity 4
problem
on
resistance
and
resistivity
4
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0
like
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0
dislike
57
views
1
answer
asked
May 18, 2019
by
anonymous
Problem on resistance and resistivity 3
Problem on resistance and resistivity 3
Last answer:
Problem on resistance and resistivity 3
problem
on
resistance
and
resistivity
3
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0
like
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0
dislike
39
views
1
answer
asked
May 18, 2019
by
anonymous
Problem on resistance and resistivity 2
Problem on resistance and resistivity 2
Last answer:
Problem on resistance and resistivity 2
problem
on
resistance
and
resistivity
2
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0
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0
dislike
53
views
1
answer
asked
May 16, 2019
by
anonymous
Problem on resistance and resistivity 1
Problem on resistance and resistivity 1
Last answer:
Problem on resistance and resistivity 1
problem
on
resistance
and
resistivity
1
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0
like
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0
dislike
40
views
1
answer
asked
May 16, 2019
by
anonymous
Problem on electrical power and energy 2
Problem on electrical power and energy 2
Last answer:
Problem on electrical power and energy 2
problem
on
electrical
power
and
energy
2
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0
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0
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96
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1
answer
asked
May 16, 2019
by
anonymous
Problem on electrical power and energy 1
Problem on electrical power and energy 1
Last answer:
Problem on electrical power and energy 1
problem
on
electrical
power
and
energy
1
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0
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0
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50
views
1
answer
asked
May 16, 2019
by
anonymous
Problem on electrical power and energy 7
Problem on electrical power and energy 7
Last answer:
Problem on electrical power and energy 7
problem
on
electrical
power
and
energy
7
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0
like
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0
dislike
44
views
1
answer
asked
May 16, 2019
by
anonymous
Problem on electrical power and energy 6
Problem on electrical power and energy 6
Last answer:
Problem on electrical power and energy 6
problem
on
electrical
power
and
energy
6
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0
like
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0
dislike
42
views
1
answer
asked
May 16, 2019
by
anonymous
Problem on electrical power and energy 5
Problem on electrical power and energy 5
Last answer:
Problem on electrical power and energy 5
problem
on
electrical
power
and
energy
5
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0
like
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0
dislike
42
views
1
answer
asked
Jun 22, 2018
by
anonymous
Is gate turn on mechanism of GTO is similar to conventional thyristor?
Is gate turn on mechanism of GTO is similar to conventional thyristor?
Last answer:
Yes gate turn on mechanism of GTO is similar to conventional thyristor.
gto
turn
on
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0
dislike
227
views
1
answer
asked
Feb 14, 2018
by
anonymous
Explain the principle of ON OFF control and phase control of AC voltage controller with suitable circuit and waveforms.
Explain the principle of ON-OFF control and phase control of AC voltage controller with suitable circuit and waveforms.
Last answer:
The integral cycle control (on-off control) and phase angle control are the two types of AC voltage controller. The principle of ON-OFF control: The on-off control is also called an integral cycle ... control. In phase control, the switch is on for some period of each cycle.
on
off
control
phase
ac
voltage
controller
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2.9k
views
1
answer
asked
Dec 28, 2017
by
anonymous
what is the minimum voltage required to turn on a diode ?
what is the minimum voltage required to turn on a diode ?
Last answer:
0.7 v sil and 0.3 v for gr
minimum
voltage
turn
on
diode
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1
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128
views
1
answer
asked
Sep 21, 2017
by
anonymous
how can we turn on and turn off GTO?
Last answer:
GTO can be turned on by providing positive pulse to the gate terminal and it can be turn off by providing negative pulse to gate terminal.
gto
turn
on
off
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0
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73
views
1
answer
asked
Sep 15, 2017
by
anonymous
Explain the on state losses in power BJT.
Explain the on state losses in power BJT.
Last answer:
On state losses in power BJT: Transistor have four types of losses one is turn on state losses second is turn off state losses third is turn on switching losses and fourth is turn ... ON = VCE sat x IC With increasing collector current collector to emitter saturation voltage increases.
bjt
on
state
losses
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0
dislike
237
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1
answer
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