Discuss
menu
search
person
Login
Register
search
edit
Ask a Question
Discuss
All Activity
Q&A
Questions
Hot!
Unanswered
Tags
Users
Ask a Question
Recent questions tagged resistance
asked
May 7, 2020
by
anonymous
State the procedure for testing of earth pit resistance with necessary diagrams.
State the procedure for testing of earth pit resistance with necessary diagrams.
Last answer:
Following procedure (Method) for testing of earth pit resistance with necessary diagrams. 1) Earth Tester : i) Three point method ii) Four point method 2) By Potential drop method 3 ... of that earthing pit. In this test the accuracy is less but electrical rods are not required.
state
the
procedure
for
testing
of
earth
pit
resistance
with
necessary
diagrams
thumb_up_alt
0
like
thumb_down_alt
0
dislike
114
views
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
thumb_up_alt
0
like
thumb_down_alt
0
dislike
84
views
1
answer
asked
Apr 28, 2020
by
anonymous
What do you mean by exciting resistance and exciting reactance?
What do you mean by exciting resistance and exciting reactance?
what
do
you
mean
by
exciting
resistance
and
reactance
thumb_up_alt
1
like
thumb_down_alt
1
dislike
81
views
0
answers
asked
Apr 20, 2020
by
anonymous
If the 12 Ohm resistor draws a current of 1 A as shown in the figure, the value of resistance R is
If the 12 Ohm resistor draws a current of 1 A as shown in the figure, the value of resistance R is
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%; }
if
the
12
ohm
resistor
draws
a
current
of
1
as
shown
in
figure
value
resistance
r
is
thumb_up_alt
0
like
thumb_down_alt
1
dislike
244
views
2
answers
asked
Apr 16, 2020
by
anonymous
Write measures to be taken to maintain the insulation resistance of electrical machines to healthy levels.
Write measures to be taken to maintain the insulation resistance of electrical machines to healthy levels.
write
measures
to
be
taken
maintain
the
insulation
resistance
of
electrical
machines
healthy
levels
thumb_up_alt
0
like
thumb_down_alt
0
dislike
46
views
0
answers
asked
Mar 19, 2020
by
anonymous
Resistance
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%; }
resistance
thumb_up_alt
0
like
thumb_down_alt
0
dislike
80
views
1
answer
asked
Jan 24, 2020
by
anonymous
what is equivalent resistance when four 4 Ohm resistors are connected in i) series ii) parallel
what is equivalent resistance when four 4 Ohm resistors are connected in i) series ii) parallel
Last answer:
equivalent resistance
equivalent
resistance
resistors
series
parallel
thumb_up_alt
0
like
thumb_down_alt
0
dislike
106
views
2
answers
asked
Sep 4, 2019
by
anonymous
role of the series resistance connected in PMMC movement.
role of the series resistance connected in PMMC movement.
Last answer:
A PMMC Instrument can be used as voltmeter by just connecting a series resistance with the moving coil. This series resistance is called Voltmeter Multiplier. This combination of moving coil and ... current whose voltage is to be measured. Ideally the resistance of voltmeter should be infinite
role
series
resistance
pmmc
movement
thumb_up_alt
0
like
thumb_down_alt
0
dislike
84
views
1
answer
asked
Aug 19, 2019
by
anonymous
Define resistance with its unit.
Define resistance with its unit.
Last answer:
Resistance is a measure of the degree to which a substance impedes the flow of electric current induced by a voltage. Or Resistance is the opposition to current flow in an electrical circuit. Unit is ohm.(Ω)
resistance
thumb_up_alt
0
like
thumb_down_alt
0
dislike
52
views
1
answer
asked
Jul 27, 2019
by
anonymous
List two advantages of platinum resistance thermometer.
List two advantages of platinum resistance thermometer.
Last answer:
1. The platinum resistance thermometer is stable 2. It is resistant to corrosion 3. It is resistant to oxidation
platinum
resistance
thermometer
thumb_up_alt
0
like
thumb_down_alt
0
dislike
47
views
1
answer
asked
Jun 29, 2019
by
anonymous
What is the mathematical relationship between resistance and conductance?
What is the mathematical relationship between resistance and conductance?
what
is
the
mathematical
relationship
between
resistance
and
conductance
thumb_up_alt
0
like
thumb_down_alt
0
dislike
64
views
0
answers
asked
Jun 29, 2019
by
anonymous
How does the resistance of a conductor compare to that of an insulator?
How does the resistance of a conductor compare to that of an insulator?
Last answer:
The resistance of a conductor can be significantly lower than the resistance of an insulator, depending on each material's atomic properties.
how
does
the
resistance
of
a
conductor
compare
to
that
an
insulator
thumb_up_alt
0
like
thumb_down_alt
0
dislike
2.5k
views
1
answer
asked
Jun 11, 2019
by
anonymous
Resistance formula
Resistance formula
Last answer:
The formula for resistance is, Where, R = resistance in Ohms ρ = resistivity in ohm - metre l = length A = cross sectional area
resistance
formula
thumb_up_alt
0
like
thumb_down_alt
0
dislike
107
views
2
answers
asked
May 30, 2019
by
anonymous
Parallel Reactance and Resistance Example 1
Parallel Reactance and Resistance Example 1
Last answer:
Parallel Reactance and Resistance Example 1
parallel
reactance
and
resistance
example
1
thumb_up_alt
0
like
thumb_down_alt
0
dislike
110
views
2
answers
asked
May 26, 2019
by
anonymous
AC Circuits with Resistance but No Reactance
AC Circuits with Resistance but No Reactance
Last answer:
AC Circuits with Resistance but No Reactance AC Circuits with Resistance but No Reactance Series resistances let two resistances R 1 and R 2 are connected in series as shows in figure and there ... voltage. Voltage V A is common to both the branch hence voltage V A is common reference.
ac
circuits
with
resistance
but
no
reactance
thumb_up_alt
0
like
thumb_down_alt
0
dislike
68
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
thumb_up_alt
0
like
thumb_down_alt
0
dislike
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
thumb_up_alt
0
like
thumb_down_alt
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
thumb_up_alt
0
like
thumb_down_alt
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
thumb_up_alt
0
like
thumb_down_alt
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
thumb_up_alt
0
like
thumb_down_alt
0
dislike
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
thumb_up_alt
0
like
thumb_down_alt
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
thumb_up_alt
0
like
thumb_down_alt
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
thumb_up_alt
0
like
thumb_down_alt
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
thumb_up_alt
0
like
thumb_down_alt
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
thumb_up_alt
0
like
thumb_down_alt
0
dislike
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
thumb_up_alt
0
like
thumb_down_alt
0
dislike
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
thumb_up_alt
0
like
thumb_down_alt
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
thumb_up_alt
0
like
thumb_down_alt
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
thumb_up_alt
0
like
thumb_down_alt
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
thumb_up_alt
0
like
thumb_down_alt
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
thumb_up_alt
0
like
thumb_down_alt
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
thumb_up_alt
0
like
thumb_down_alt
0
dislike
40
views
1
answer
asked
Oct 12, 2018
by
anonymous
Compare between Resistance welding and Arc welding on any six points.
Compare between Resistance welding and Arc welding on any six points.
Last answer:
Sr.No Parameters Resistance Welding Arc Welding 1 Type of welding Plastic/Pressure/Non-fusion welding Fusion/Non pressure welding 2 Principle of heat developed Heat ... It is suitable for mass production It is suitable for heavy job, maintenance and repair work
compare
resistance
welding
arc
thumb_up_alt
0
like
thumb_down_alt
0
dislike
65
views
1
answer
asked
Sep 6, 2018
by
anonymous
Name two methods for measurement of low, medium and high resistance. Give one advantage and one limitation of V- I method.
Name two methods for measurement of low, medium and high resistance. Give one advantage and one limitation of V- I method.
Last answer:
Methods for measurement of low resistance: 1. Ammeter voltmeter method 2. Kelvin's bridge method 3. Ohm meter method 4. Potentiometer method 5. Digital/analog multi-meter ... must be infinity for perfectly accurate measurement which is not possible. 2. Connection errors.
methods
measurement
low
medium
high
resistance
thumb_up_alt
0
like
thumb_down_alt
0
dislike
2.5k
views
1
answer
asked
Sep 6, 2018
by
anonymous
Name the method used to measure following resistances:- (i) Low resistance (ii) Medium resistance (iii) Insulation resistance (iv) Earth resistance.
Name the method used to measure following resistances:- (i) Low resistance (ii) Medium resistance (iii) Insulation resistance (iv) Earth resistance.
Last answer:
Following are the methods used to measure resistances:- (i) Low resistance: 1.Voltmeter-Ammeter Method 2. Kelvin's Double bridge Method (ii) Medium resistance: 1.Voltmeter-Ammeter Method 2. ... of Charge Method (iv) Earth resistance : 1. Fall of Potential Method 2. Earth tester
measure
low
medium
insulation
earth
resistance
thumb_up_alt
0
like
thumb_down_alt
0
dislike
2.5k
views
1
answer
asked
Sep 6, 2018
by
anonymous
Write any two factors on which earth resistance depends.
Write any two factors on which earth resistance depends.
Last answer:
Factors on which earth resistance depends: (1) The shape and material used for the electrode (2) Depth of the electrode in the ground. (3) The specific resistance of the soil around the electrode (4) Moisture content in the soil. (5) Nature of soil
factors
earth
resistance
thumb_up_alt
0
like
thumb_down_alt
0
dislike
85
views
1
answer
asked
Sep 6, 2018
by
anonymous
State the use of shunt and series resistance used in extension of meter.
State the use of shunt and series resistance used in extension of meter.
Last answer:
Use of shunt and series resistance: i) Use of shunt: To extend the range of Ammeter. ii) Use of series resistance: To extend the range of Voltmeter.
shunt
series
resistance
used
extension
meter
thumb_up_alt
0
like
thumb_down_alt
0
dislike
53
views
1
answer
asked
Sep 6, 2018
by
anonymous
State the range for low and medium resistance.
State the range for low and medium resistance.
Last answer:
Low resistances: less than 1 ohm. Medium resistances: 1 ohm to 0.1 Mega ohm.
range
low
medium
resistance
thumb_up_alt
0
like
thumb_down_alt
0
dislike
40
views
1
answer
asked
Sep 6, 2018
by
anonymous
Explain V- I method of measurement of medium resistance.
Explain V- I method of measurement of medium resistance.
Last answer:
In this method, use suitable source, ammeter and voltmeter and connect them as shown in the above diagram. Take reading of voltmeter and ammeter, then value of resistance = R = V/I Ω To minimise the error take 4 to 5 observation for the same resistance and take their average.
v-
i
method
measurement
medium
resistance
thumb_up_alt
0
like
thumb_down_alt
0
dislike
62
views
1
answer
asked
Sep 5, 2018
by
anonymous
Give classification of resistance based on their ranges.
Give classification of resistance based on their ranges.
Last answer:
Classification of Resistances Based on Their Ranges: 1) Low resistance: less than 1 ohm. 2) Medium resistance: 1 ohm to 0.1 Mega ohms. 3) High resistance: greater than 0.1 Mega ohms.
classification
resistance
based
ranges
thumb_up_alt
0
like
thumb_down_alt
0
dislike
54
views
1
answer
asked
Sep 5, 2018
by
anonymous
Define pinch off voltage and drain resistance of FET.
Define pinch off voltage and drain resistance of FET.
Last answer:
1 . Pinch-off Voltage: It is the value of the drain to source voltage VDS at which the drain current ID reaches its constant saturation value. Any further increase in VDS does not have any ... drain to source voltage to the change in drain current. It is also called AC/dynamic drain resistance.
define
pinch
off
voltage
drain
resistance
fet
thumb_up_alt
0
like
thumb_down_alt
0
dislike
53
views
1
answer
asked
Sep 4, 2018
by
anonymous
Define the following terms as referred to battery. a) E.M.F b) Internal resistance c) Ah efficiency d) WAh efficiency
Define the following terms as referred to battery. a) E.M.F b) Internal resistance c) Ah efficiency d) WAh efficiency
Last answer:
a) E.M.F : The electromotive force of a battery is defined as the energy spent or the work done in taking a unit positive charge around the complete circuit of the battery i.e., in ... input required to restore the initial state of charge, under specified conditions, is called Watt-hr efficiency.
internal
resistance
thumb_up_alt
0
like
thumb_down_alt
0
dislike
67
views
1
answer
asked
Jun 18, 2018
by
anonymous
A resistor in which the resistance changes exponentially with change in temperature is called as
A resistor in which the resistance changes exponentially with change in temperature is called as A) Potentiometer B) Phototransistor C) Varactor D) Thermistor
Last answer:
A resistor in which the resistance changes exponentially with change in temperature is called as Thermistor
resistor
resistance
exponentially
change
temperature
thumb_up_alt
0
like
thumb_down_alt
0
dislike
157
views
1
answer
asked
May 8, 2018
by
anonymous
If the insulation resistance of a cable of length 10 km is 1 mega ohm, its insulation resistance
If the insulation resistance of a cable of length 10 km is 1 mega ohm, its insulation resistance for 50 km length will be
Last answer:
If the insulation resistance of a cable of length 10 km is 1 mega ohm, its insulation resistance for 50 km length will be 0.2 mega ohm
insulation
resistance
cable
length
thumb_up_alt
0
like
thumb_down_alt
0
dislike
744
views
1
answer
asked
May 8, 2018
by
anonymous
A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2
A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ohm. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is
Last answer:
A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ohm. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is 0.87
dc
machine
supplies
generator
armature
resistance
thumb_up_alt
0
like
thumb_down_alt
0
dislike
67
views
1
answer
asked
May 8, 2018
by
anonymous
We connected a 35V dc supply to a resistance of 600 Ohm in series with an unknown resistance
We connected a 35V dc supply to a resistance of 600 Ohm in series with an unknown resistance R.A. voltmeter having a resistance of 1.2 kOhm is connected across 600 Ohm resistance and read 5v. The value of resistance R will be
Last answer:
We connected a 35V dc supply to a resistance of 600 Ohm in series with an unknown resistance R.A. voltmeter having a resistance of 1.2 kOhm is connected across 600 Ohm resistance and read 5v. The value of resistance R will be 2.4 kOhm
dc
supply
resistance
series
thumb_up_alt
0
like
thumb_down_alt
0
dislike
112
views
1
answer
asked
May 3, 2018
by
anonymous
A single phase transformer has resistance and reactance of 0.2 pu and 0.6 pu respectively. Its pu voltage
A single phase transformer has resistance and reactance of 0.2 pu and 0.6 pu respectively. Its pu voltage regulation at 0.8 pf lagging would he
Last answer:
A single phase transformer has resistance and reactance of 0.2 pu and 0.6 pu respectively. Its pu voltage regulation at 0.8 pf lagging would he 0.52
single
phase
transformer
resistance
reactance
thumb_up_alt
0
like
thumb_down_alt
0
dislike
223
views
1
answer
asked
May 3, 2018
by
anonymous
A 200 V dc shunt motor is running at 1000 rpm and drawing a current of 10 A. Its armature winding resistance
A 200 V dc shunt motor is running at 1000 rpm and drawing a current of 10 A. Its armature winding resistance is 2 Ohm. It. is braked by plugging. The resistance to be connected in series with armature to restrict armature current to 10 A, is
Last answer:
A 200 V dc shunt motor is running at 1000 rpm and drawing a current of 10 A. Its armature winding resistance is 2 Ohm. It. is braked by plugging. The resistance to be connected in series with armature to restrict armature current to 10 A, is 36 Ohm
dc
shunt
motor
running
current
armature
winding
resistance
thumb_up_alt
0
like
thumb_down_alt
0
dislike
169
views
1
answer
asked
May 1, 2018
by
anonymous
Arc resistance
Arc resistance (1) increases with increase in arc current (2) decrease with increase in arc current (3) is independent of arc current (4) is independent of arc length
Last answer:
Arc resistance decrease with increase in arc current
arc
resistance
thumb_up_alt
0
like
thumb_down_alt
0
dislike
54
views
1
answer
asked
Apr 30, 2018
by
anonymous
Identify the correct combination of respective Electric arc welding and Electric resistance welding methods :
Identify the correct combination of respective Electric arc welding and Electric resistance welding methods : (A) Butt welding and Seam welding (B) Hydrogen shielding and Projection welding (C) Seam welding and Coated electrode welding (D) Coated electrode welding and Hydrogen shielding
Last answer:
Identify the correct combination of respective Electric arc welding and Electric resistance welding methods : (A) Butt welding and Seam welding (B) Hydrogen shielding and Projection welding ... Seam welding and Coated electrode welding (D) Coated electrode welding and Hydrogen shielding
electric
arc
welding
resistance
methods
thumb_up_alt
0
like
thumb_down_alt
0
dislike
76
views
1
answer
Page:
1
2
3
next »
Install Now
Recent Questions
Subscribe
...