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What is dielectric withstand voltage?
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Mar 10, 2018
by
anonymous
What is dielectric withstand voltage?
dielectric
voltage
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asked
Sep 4, 2018
by
anonymous
Define : (i) Dielectric strength (ii) Breakdown voltage
Define : (i) Dielectric strength (ii) Breakdown voltage
Last answer:
(i) Dielectric strength: The voltage which a dielectric material can withstand without breaking down (without losing its dielectric property) is called its dielectric strength. It is represented by kV/mm ... or is no longer an insulator) for a specified thickness, is its breakdown voltage.
dielectric
strength
breakdown
voltage
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asked
Apr 28, 2018
by
anonymous
The frequencies and voltage used in Dielectric heating are
The frequencies and voltage used in Dielectric heating are (A) 10 – 30 MHz, upto 25 kV (B) 50 – 60 Hz, upto 25 kV (C) 10 – 30 MHz, upto 100 V (D) 50 – 60 Hz, 110 V – 230 V
Last answer:
The frequencies and voltage used in Dielectric heating are 10 – 30 MHz, upto 25 kV
frequencies
voltage
used
dielectric
heating
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asked
Mar 10, 2018
by
anonymous
What is dielectric breakdown strength?
What is dielectric breakdown strength?
dielectric
breakdown
strength
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asked
Sep 4, 2018
by
anonymous
What is dielectric strength of an insulating material? What is its unit?
What is dielectric strength of an insulating material? What is its unit?
Last answer:
Dielectric Strength: The dielectric strength of an insulating material is the maximum voltage which the insulating medium can withstand without breakdown. Unit is volts per millimeter (V/mm), or kV/mm or kV/cm
dielectric
strength
insulating
material
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asked
Mar 11, 2018
by
anonymous
What is the difference between an insulator and a dielectric?
What is the difference between an insulator and a dielectric?
Last answer:
Dielectric is the another name for insulator.
difference
between
insulator
dielectric
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asked
Mar 11, 2018
by
anonymous
What is meant by dielectric heating?
What is meant by dielectric heating?
dielectric
heating
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asked
Apr 28, 2018
by
anonymous
The bridge most suited for accurate measurement of relative permittivity of dielectric materials is
The bridge most suited for accurate measurement of relative permittivity of dielectric materials is (A) Carey Foster Bridge (B) Anderson’s bridge (C) Heaviside Bridge modified by Campbell. (D) Schering Bridge.
Last answer:
The bridge most suited for accurate measurement of relative permittivity of dielectric materials is Schering Bridge.
bridge
accurate
measurement
relative
permittivity
dielectric
materials
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86
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1
answer
asked
Apr 25, 2018
by
anonymous
Dielectric loss in a capacitor is best measured by
Dielectric loss in a capacitor is best measured by (A) Wien Bridge (B) Schering Bridge (C) Anderson Bridge (D) Heaviside-Campbell Equal Ratio Bridge
Last answer:
Dielectric loss in a capacitor is best measured by Schering Bridge
dielectric
loss
capacitor
measured
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asked
Mar 19, 2018
by
anonymous
The dielectric strength of transformer oil is expected to be?
The dielectric strength of transformer oil is expected to be?
Last answer:
The dielectric strength of transformer oil is expected to be 33 kV.
dielectric
strength
transformer
oil
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120
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1
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asked
Apr 16, 2020
by
anonymous
Define Dielectric Strength for transformer oil. State its value for new transformer oil.
Define Dielectric Strength for transformer oil. State its value for new transformer oil.
define
dielectric
strength
for
transformer
oil
state
its
value
new
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asked
Aug 4, 2019
by
anonymous
Write one application for the give dielectric material. (i) Polyvinyl Carbide(PVC) (ii) Glass (iii) Mica (iv) Cotton and Silk
Write one application for the give dielectric material. (i) Polyvinyl Carbide(PVC) (ii) Glass (iii) Mica (iv) Cotton and Silk
Last answer:
(i) Polyvinyl Carbide(PVC):it is used in insulation of wires and cables in domestic wiring as well as in aircraft and factory wiring (any one) (ii) Glass: 1) Alkaline glasses are used for ... with wax or varnishes are used in windings of magnet coils and small medium sized mechanics (any one)
dielectric
material
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59
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1
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asked
Aug 4, 2019
by
anonymous
State any four dielectric materials.
State any four dielectric materials.
Last answer:
Ceramics, distilled water, paper, mica, polyethylene, and glass. Metal oxides
dielectric
materials
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1
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asked
Apr 30, 2018
by
anonymous
The power factor of dielectric :
The power factor of dielectric : (A) is a function of temperature of the dielectric only (B) depends only on voltage stress to which the dielectric is stressed (C) always constant (D) both (A) and (B)
Last answer:
The power factor of dielectric : (A) is a function of temperature of the dielectric only (B) depends only on voltage stress to which the dielectric is stressed (C) always constant (D) both (A) and (B)
power
factor
dielectric
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1
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asked
Mar 10, 2018
by
anonymous
What is meant by flash over voltage?
What is meant by flash over voltage?
flash
over
voltage
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0
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asked
Mar 10, 2018
by
anonymous
What is the definition of extra low voltage?
What is the definition of extra low voltage?
Last answer:
Extra-low voltage (ELV) is an electricity supply voltage in a range which carries a low risk of dangerous electrical shock.
definition
extra
low
voltage
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118
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1
answer
asked
Mar 10, 2018
by
anonymous
What is the difference between line and phase voltage?
What is the difference between line and phase voltage?
Last answer:
Line voltage is voltage between two phases R &Y (415 v) while phase voltage is the voltage between one phase and a neutral B & N (240 v).
difference
between
line
phase
voltage
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130
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1
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asked
Mar 10, 2018
by
anonymous
What is impulse voltage of transformer?
What is impulse voltage of transformer?
impulse
voltage
transformer
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56
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0
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asked
Mar 10, 2018
by
anonymous
What is Extra High Voltage?
What is Extra High Voltage?
extra
high
voltage
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asked
Mar 10, 2018
by
anonymous
What is the difference between a line voltage and low voltage control system?
What is the difference between a line voltage and low voltage control system?
difference
between
line
voltage
low
control
system
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asked
Mar 10, 2018
by
anonymous
What is a high voltage test?
What is a high voltage test?
high
voltage
test
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0
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asked
Mar 10, 2018
by
anonymous
What is considered low voltage and high voltage?
What is considered low voltage and high voltage?
low
voltage
high
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asked
Mar 10, 2018
by
anonymous
What are the advantages of high voltage transmission?
What are the advantages of high voltage transmission?
Last answer:
Advantages: 1. As Transmission voltage increases, current decreases. 2. As current decreases, cross section of conductor decreases. 3. As cross section of conductor decreases ... line increases 12. As transmission voltage increases power handling capacity of transmission line increases
advantages
high
voltage
transmission
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3.1k
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1
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asked
Apr 28, 2018
by
anonymous
In voltage source converter based HVDC transmission system the active power is controlled by changing
In voltage source converter based HVDC transmission system the active power is controlled by changing (A) phase angle of the converter ac input voltage (B) supply frequency of the converter ac input voltage (C) magnitude of the converter ac input voltage (D) DC voltage at the inverter terminals
Last answer:
In voltage source converter based HVDC transmission system the active power is controlled by changing phase angle of the converter ac input voltage
voltage
source
converter
hvdc
transmission
system
active
power
controlled
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1
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asked
Mar 10, 2018
by
anonymous
Why high voltage test is done?
Why high voltage test is done?
high
voltage
test
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0
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asked
Mar 10, 2018
by
anonymous
Why high voltage is used in power transmission?
Why high voltage is used in power transmission?
Last answer:
The primary reason that power is transmitted at high voltages is to increase efficiency. ... The lower current that accompanies high voltage transmissionreduces resistance in the conductors aselectricity flows ... This means that thin, light-weight wires can beused in long-distance transmission.
high
voltage
power
transmission
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2
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asked
Mar 10, 2018
by
anonymous
How do you fix voltage drop?
How do you fix voltage drop?
fix
voltage
drop
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73
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0
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asked
Mar 10, 2018
by
anonymous
Why high voltage can reduce power loss?
Why high voltage can reduce power loss?
Last answer:
when voltage has increased due to reduced current flow, thus power loss given by ( I^2R) will be low due to reduced current(I^2) provided that resistance (R) is constant.
high
voltage
reduce
power
loss
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1
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asked
Mar 10, 2018
by
anonymous
Why does increase in current mean a decrease in voltage?
Why does increase in current mean a decrease in voltage?
Last answer:
This is because current flows from high potential to low potential to bring the two diffrent potential to unity , thus a reduced potential (voltage)
increase
current
decrease
voltage
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1
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asked
Jan 24, 2020
by
anonymous
What is terminal voltage ?
What is terminal voltage ?
terminal
voltage
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64
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0
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asked
Sep 4, 2018
by
anonymous
What is internal voltage drop and terminal voltage?
What is internal voltage drop and terminal voltage?
Last answer:
It is not permissible to just connect the positive terminal to the negative terminal of a cell with a copper wire. It will overheat and get damaged. This happens because the electromotive force (emf) ... than the nominal voltage (emf) of the cell and this lower voltage is called terminal voltage.
internal
voltage
drop
terminal
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132
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2
answers
asked
Aug 11, 2018
by
anonymous
What is line voltage and phase voltage?
What is line voltage and phase voltage? Draw balanced three phase star connected system. Show all the voltages and currents.
line
voltage
phase
star
connected
system
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106
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0
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asked
Jun 18, 2018
by
anonymous
An SSB transmitter produces a peak-to-peak voltage of 200 V across a 100 Ω antenna load. What is the Peak
An SSB transmitter produces a peak-to-peak voltage of 200 V across a 100 Ω antenna load. What is the Peak Envelope Power? A) 49.98 W B) 79.98 W C) 99.96 W D) 199.93 W
Last answer:
An SSB transmitter produces a peak-to-peak voltage of 200 V across a 100 Ω antenna load. What is the Peak Envelope Power? A) 49.98 W B) 79.98 W C) 99.96 W D) 199.93 W
ssb
transmitter
peak-to-peak
voltage
antenna
load
peak
envelope
power
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210
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1
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asked
Apr 29, 2018
by
anonymous
What is a capacitor voltage transformer?
What is a capacitor voltage transformer? A) It is a transformer used in power systems to step up low voltage signals and provide extra high voltage B) It is a transformer used in power systems to step up high voltage signals and provide extra high voltage C) It is a transformer used in power systems to step down extra high voltage signals and provide low voltage D) None of these
Last answer:
What is a capacitor voltage transformer? A) It is a transformer used in power systems to step up low voltage signals and provide extra high voltage B) It is a transformer used in power systems ... power systems to step down extra high voltage signals and provide low voltage D) None of these
capacitor
voltage
transformer
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76
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1
answer
asked
Apr 29, 2018
by
anonymous
What happens to the voltage in the secondary when the frequency of the supply in the primary is decreased?
What happens to the voltage in the secondary when the frequency of the supply in the primary is decreased? A) It increases B) It decreases C) It remains the same D) Cannot say unless the actual percentage increase in the frequency is known
Last answer:
What happens to the voltage in the secondary when the frequency of the supply in the primary is decreased? A) It increases B) It decreases C) It remains the same D) Cannot say unless the actual percentage increase in the frequency is known
voltage
secondary
frequency
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73
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1
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asked
Apr 29, 2018
by
anonymous
What is the RMS voltage in a series RL circuit, if the voltage across R and L is 256 V and 192 V respectively?
What is the RMS voltage in a series RL circuit, if the voltage across R and L is 256 V and 192 V respectively? A) 320 V B) 448 V C) 64 V D) None of these
Last answer:
What is the RMS voltage in a series RL circuit, if the voltage across R and L is 256 V and 192 V respectively? A) 320 V B) 448 V C) 64 V D) None of these
rms
voltage
series
rl
circuit
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64
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1
answer
asked
Mar 19, 2018
by
anonymous
What is meant by pinch off voltage in MOSFET?
What is meant by pinch off voltage in MOSFET?
pinch
off
voltage
mosfet
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72
views
0
answers
asked
Mar 10, 2018
by
anonymous
What is meant by extra high voltage transmission?
What is meant by extra high voltage transmission?
Last answer:
HT & LT two types transmission in industrial line
extra
high
voltage
transmission
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92
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1
answer
asked
Mar 10, 2018
by
anonymous
What is the unit of measure for voltage?
What is the unit of measure for voltage?
Last answer:
Voltage measured in volts.
unit
measure
voltage
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55
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1
answer
asked
Mar 10, 2018
by
anonymous
What equipment is used to measure voltage?
What equipment is used to measure voltage?
Last answer:
Voltmeter is used to measure voltage.
equipment
used
measure
voltage
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182
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2
answers
asked
Mar 10, 2018
by
anonymous
What is an analog voltage?
What is an analog voltage?
analog
voltage
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54
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0
answers
asked
Mar 10, 2018
by
anonymous
What is the cause of voltage fluctuation?
What is the cause of voltage fluctuation?
cause
voltage
fluctuation
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55
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0
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asked
Mar 10, 2018
by
anonymous
What is voltage interruption?
What is voltage interruption?
voltage
interruption
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39
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0
answers
asked
Mar 10, 2018
by
anonymous
What is meant by a voltage surge?
What is meant by a voltage surge?
voltage
surge
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50
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0
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asked
Mar 10, 2018
by
anonymous
What is voltage sags and swells?
What is voltage sags and swells?
voltage
sags
swells
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60
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0
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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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128
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1
answer
asked
Dec 22, 2017
by
anonymous
What is the voltage in 3 phase line?
What is the voltage in 3 phase line?
Last answer:
between 430 to 440 v
voltage
phase
line
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259
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4
answers
asked
Dec 19, 2017
by
anonymous
What is the threshold voltage?
What is the threshold voltage?
Last answer:
440
threshold
voltage
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88
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1
answer
asked
Dec 9, 2017
by
anonymous
What is the ripple voltage?
What is the ripple voltage?
Last answer:
Ripple voltage is the small variations in Dc voltage that remain after filtering in a power supply.
ripple
voltage
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141
views
3
answers
asked
Dec 9, 2017
by
anonymous
What is the voltage of a red LED?
What is the voltage of a red LED?
Last answer:
A red led requires 2v to light. LEDs requires different amounts of voltage ranging between 1.8 and 3.3 depending on the intensity and color of the Led.
voltage
red
led
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168
views
4
answers
asked
Oct 21, 2017
by
anonymous
If resistance is 8 Ohm and current is 16 ampere then what will be the voltage and power?
If resistance is 8 Ohm and current is 16 ampere then what will be the voltage and power?
Last answer:
128 volts ,2048 watts
voltage
power
problem
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2
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