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The material used for fuse must have?
asked
Mar 20, 2018
by
anonymous
material
used
fuse
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1
Answer
answered
Mar 20, 2018
by
anonymous
The material used for fuse must have
low melting point and high specific resistance.
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Related questions
asked
May 7, 2020
by
anonymous
State the material used for making (1) Magnetic Core (2) Fuse element
State the material used for making (1) Magnetic Core (2) Fuse element
Last answer:
The material used for making of: (1) Magnetic Core : Iron, cobalt, Nickel, CRGO, HRGO , silicon steel (2) Fuse Element: Tin- lead wire, Tinned copper wire
state
the
material
used
for
making
1
magnetic
core
2
fuse
element
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0
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52
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1
answer
asked
Apr 30, 2018
by
anonymous
The material used in liquid fuses is
The material used in liquid fuses is (1) SF6 (3) carbon tetra chloride (2) distilled water (4) transformer oil
Last answer:
The material used in liquid fuses is carbon tetra chloride
material
used
liquid
fuses
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255
views
1
answer
asked
Sep 6, 2018
by
anonymous
Name the material used for :- (i) Moving coil (ii) Permanent magnet in PMMC instrument.
Name the material used for :- (i) Moving coil (ii) Permanent magnet in PMMC instrument.
Last answer:
(i) Material used for Moving coil: Copper, Aluminum( some times) (ii) Permanent magnets are made of special alloys such as : Aluminum-Nickel-Cobalt (Alnicos) Strontium-Iron Neodymium-Iron-Boron Samarium-Cobalt.
material
used
moving
coil
permanent
magnet
pmmc
instrument
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98
views
1
answer
asked
Sep 5, 2018
by
anonymous
State the material used for moving coil and former for PMMC instruments.
State the material used for moving coil and former for PMMC instruments.
Last answer:
Material Used for Moving Coil and Former for PMMC Instruments: Material used for moving coil: Copper Material used for Former: Aluminium
material
used
moving
coil
pmmc
instruments
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114
views
1
answer
asked
May 5, 2020
by
anonymous
State properties of conductor material used for overhead conductor.
State properties of conductor material used for overhead conductor.
Last answer:
Following are the properties of conductor material:- 1. High conductivity :- Material should have high conductivity 2. High mechanical strength:- Material should have sufficiently high mechanical strength ... available & less costly. 9. Scrap Value: - Material should have high scrap value.
state
properties
of
conductor
material
used
for
overhead
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72
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1
answer
asked
Mar 20, 2018
by
anonymous
The insulating material used between the commutator segments is normally?
Last answer:
The insulating material used between the commutator segments is normally mica.
insulating
material
used
between
commutator
segments
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201
views
1
answer
asked
May 8, 2018
by
anonymous
A fuse wire should have :
A fuse wire should have : (A) Low specific resistance and high melting point (B) Low specific resistance and low melting point (C) High specific resistance and high melting point (D) High specific resistance and low melting point
Last answer:
A fuse wire should have : High specific resistance and low melting point
fuse
wire
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90
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1
answer
asked
Apr 26, 2018
by
anonymous
ln HRC fuse the time between cut-off and final current zero is called
ln HRC fuse the time between cut-off and final current zero is called
Last answer:
ln HRC fuse the time between cut-off and final current zero is called the arcing time
hrc
fuse
time
between
cut-off
final
current
zero
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110
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1
answer
asked
Mar 20, 2018
by
anonymous
The fuse blows off by?
Last answer:
The fuse blows off by melting.
fuse
blows
off
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52
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1
answer
asked
Mar 20, 2018
by
anonymous
The fuse rating is expressed in terms of?
Last answer:
The fuse rating is expressed in terms of current.
fuse
rating
expressed
terms
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112
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1
answer
asked
Mar 19, 2018
by
anonymous
The main function of a fuse is to?
Last answer:
The main function of a fuse is to prevent excessive currents.
main
function
fuse
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67
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1
answer
asked
Mar 20, 2018
by
anonymous
A fuse in a motor circuit provides protection against?
Last answer:
A fuse in a motor circuit provides protection against short-circuit and overload.
fuse
motor
circuit
protection
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111
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1
answer
asked
Mar 20, 2018
by
anonymous
H.R.C. fuse, as compared to a rewirable fuse, has?
Last answer:
H.R.C. fuse, as compared to a rewirable fuse, has no ageing effect, high speed of operation, high rupturing capacity.
hrc
fuse
compared
rewirable
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1
answer
asked
Mar 20, 2018
by
anonymous
A fuse is connected?
Last answer:
A fuse is connected in series with circuit.
fuse
connected
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1
answer
asked
Mar 25, 2018
by
anonymous
A material for good magnetic memory should have?
A material for good magnetic memory should have?
Last answer:
A material for good magnetic memory should have high retentivity.
material
good
magnetic
memory
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101
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1
answer
asked
Aug 12, 2018
by
anonymous
State the four major parts of Transformer and material used for their construction.
State the four major parts of Transformer and material used for their construction.
transformer
major
parts
material
construction
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82
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0
answers
asked
Sep 18, 2018
by
anonymous
State function of Busbar and which material is used for busbar?
State function of Busbar and which material is used for busbar?
Last answer:
Function of Busbar Bus-bar: - Distribute the load on 3-phase four wire systems. To provide number of connection of incoming line and to provide easy way to connect number of sub circuit. ... to the element. This element means busbar Material is used for busbar: 1. Copper 2. Alluminium
function
busbar
material
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views
1
answer
asked
May 7, 2020
by
anonymous
State any two advantages of MCB over Fuse. State the standard specifications of MCB available in the market.
State any two advantages of MCB over Fuse. State the standard specifications of MCB available in the market.
Last answer:
Following advantages of MCB over Fuse: 1. No need of replacement of fuse wire. 2. Manually restore of supply is simple. 3. Fault understanding by visual inspection 4. More safe than fuse The standard specifications of ... 6A, 10A,16A,20A, 25A, 30A, 32A, 40A, 50A, 60A and 63A 6. 250V and 450 v
state
any
two
advantages
of
mcb
over
fuse
the
standard
specifications
available
in
market
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105
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1
answer
asked
Apr 27, 2020
by
anonymous
Write applications of each of the following:(i) Fuse (ii) MCB (iii) MCCB.
Write applications of each of the following:(i) Fuse (ii) MCB (iii) MCCB.
Last answer:
i) Applications of fuse: * Used in domestic installations to provide short circuit protection. * Used in commercial / Industrial installations to provide overload and short circuit protection. * Used in ... * Rectifiers panels, * U.P.S, Electronic equipment, * Motors, * Furnaces
write
applications
of
each
the
following
i
fuse
ii
mcb
iii
mccb
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1
answer
asked
Apr 27, 2020
by
anonymous
Give the function of fuse and switch.
Give the function of fuse and switch.
Last answer:
Functions of fuse: * To break the circuit under fault condition. * To provide overcurrent protection to the circuit. * To provide short circuit protection to the circuit. * To provide ... * To make the electric circuit manually. * To break the electric circuit manually.
give
the
function
of
fuse
and
switch
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48
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1
answer
asked
Aug 24, 2019
by
anonymous
What is a fuse ?
What is a fuse ?
Last answer:
A Fuse is a protective device which prevent overloading of current in a circuit.
fuse
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110
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3
answers
asked
Aug 8, 2017
by
anonymous
what is HRC fuse?
what is HRC fuse?
Last answer:
HRC (High Rupturing Capacity) fuse HRC fuse is High Rupturing Capacity fuse. At the time of fault it disconnect the circuit very fast. Filling powder is silica sand. No flashover ... speed response Reliable No maintenance CheaperDisadvantages:- We have to replace it manually after each operation.
hrc
fuse
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119
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1
answer
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
views
1
answer
asked
Mar 20, 2018
by
anonymous
The material for commutator brushes is generally?
Last answer:
The material for commutator brushes is generally carbon.
material
commutator
brushes
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92
views
1
answer
asked
Mar 6, 2018
by
anonymous
can induction heating is use for both magnetic and non magnetic material ?
Last answer:
Yes, Induction heating is used for both magnetic and non-magnetic materials.
induction
heating
magnetic
non
material
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76
views
1
answer
asked
Mar 20, 2018
by
anonymous
The inverse definite mean time relays are used for over current and earth fault protection of transformer against?
Last answer:
The inverse definite mean time relays are used for over current and earth fault protection of transformer against internal short-circuits.
inverse
definite
mean
time
relays
used
over
current
earth
fault
protection
transformer
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2.5k
views
1
answer
asked
Mar 20, 2018
by
anonymous
The single phasing relays are used for the protection of?
Last answer:
The single phasing relays are used for the protection of three phase motors.
single
phasing
relays
used
protection
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136
views
1
answer
asked
Mar 20, 2018
by
anonymous
The under voltage relay can be used for?
Last answer:
The under voltage relay can be used for generators, busbars, transformers, motors.
under
voltage
relay
used
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45
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1
answer
asked
May 8, 2018
by
anonymous
A relay used for protection of motors against overload is :
A relay used for protection of motors against overload is : (A) Impedance relay (B) Electromagnetic attraction type (C) Thermal relay (D) Buchholz's relay
Last answer:
A relay used for protection of motors against overload is : Thermal relay
relay
used
protection
motors
overload
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235
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1
answer
asked
May 8, 2018
by
anonymous
Earthing switch is used for?
Earthing switch is used for? (A) Measuring of safety voltage (B) Protection of equipment from ground faults (C) Discharging residual energies (D) All of the above
Last answer:
Earthing switch is used for? (A) Measuring of safety voltage (B) Protection of equipment from ground faults (C) Discharging residual energies (D) All of the above
earthing
switch
used
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63
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1
answer
asked
May 1, 2018
by
anonymous
A negative sequence relay is used for protection of
A negative sequence relay is used for protection of (1) Generator (3) Motor (2) Transformer (4) Long Transmission lines
Last answer:
A negative sequence relay is used for protection of Generator
negative
sequence
relay
used
protection
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454
views
1
answer
asked
Apr 26, 2018
by
anonymous
Regulating-transformers are used in power systems for control of
Regulating-transformers are used in power systems for control of
Last answer:
Regulating-transformers are used in power systems for control of power flow
regulating-transformers
used
power
systems
control
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119
views
1
answer
asked
Apr 26, 2018
by
anonymous
Surge absorbers are used for protection against
Surge absorbers are used for protection against
Last answer:
Surge absorbers are used for protection against low voltage high frequency oscillations
surge
absorbers
used
protection
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2.9k
views
1
answer
asked
Mar 20, 2018
by
anonymous
A switchgear is device used for?
Last answer:
A switchgear is device used for switching, controlling and protecting the electrical circuit and equipment.
switchgear
device
used
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0
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229
views
1
answer
asked
Mar 20, 2018
by
anonymous
Which relays are used for phase faults on long line?
Last answer:
Impedance relays are used for phase faults on long line.
relays
used
phase
faults
long
line
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0
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60
views
1
answer
asked
Mar 19, 2018
by
anonymous
Air blast circuit breaker is used for?
Last answer:
Air blast circuit breaker is used for repeated duty.
air
blast
circuit
breaker
used
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58
views
1
answer
asked
May 16, 2020
by
anonymous
Suggest the diode material suitable to rectify 0.5V AC signal.
Suggest the diode material suitable to rectify 0.5V AC signal.
Last answer:
The diode material suitable to rectify 0.5V AC signal is silicon
diode
material
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85
views
1
answer
asked
Aug 5, 2019
by
anonymous
(i) Explain the process of diffusion in semiconductor material. (ii) Explain Hall effect.
(i) Explain the process of diffusion in semiconductor material. (ii) Explain Hall effect.
Last answer:
(i) Diffusion: In a semi conductor bar a concentration gradient exist when either number of electrons or holes is greater in one region of a semi conductor as compared to other region. When ... to determine whether a semiconductor is N type or P type, and to find carrier concentration
diffusion
semiconductor
material
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44
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1
answer
asked
Jun 18, 2018
by
anonymous
The magnetic susceptibility of paramagnetic material is:
The magnetic susceptibility of paramagnetic material is: A) Less than zero B) Less than one but positive C) Greater than one D) Equal to zero
Last answer:
The magnetic susceptibility of paramagnetic material is: Less than one but positive
magnetic
susceptibility
paramagnetic
material
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151
views
1
answer
asked
May 1, 2018
by
anonymous
The desirable properties of transformer core material are
The desirable properties of transformer core material are (1) low permeability and low hysteresis loss. (2) high permeability and high hysteresis loss. (3) high permeability and low hysteresis loss. (4) low permeability and hysteresis loss.
Last answer:
The desirable properties of transformer core material are high permeability and low hysteresis loss.
desirable
properties
transformer
core
material
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130
views
1
answer
asked
Mar 25, 2018
by
anonymous
The property of a material which opposes the creation of magnetic flux in it is known as?
The property of a material which opposes the creation of magnetic flux in it is known as?
Last answer:
The property of a material which opposes the creation of magnetic flux in it is known as reluctance.
property
material
opposes
creation
magnetic
flux
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265
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1
answer
asked
Mar 25, 2018
by
anonymous
If the area of hysteresis loop of a material is large, the hysteresis loss in this material will be?
If the area of hysteresis loop of a material is large, the hysteresis loss in this material will be?
Last answer:
If the area of hysteresis loop of a material is large, the hysteresis loss in this material will be large.
area
hysteresis
loop
material
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215
views
1
answer
asked
Mar 25, 2018
by
anonymous
The relative permeability of a ferromagnetic material is?
The relative permeability of a ferromagnetic material is?
Last answer:
The relative permeability of a ferromagnetic material is more than 100 or 1000.
relative
permeability
ferromagnetic
material
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75
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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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69
views
1
answer
asked
May 7, 2020
by
anonymous
State gaseous and liquid insulating material.
State gaseous and liquid insulating material.
Last answer:
i) Gaseous insulating material : 1. Air 2. Nitrogen 3. Hydrogen 4. SF6 ii) liquid insulating material: 1. Transformer oil 2. Capacitor oil 3. Cable oil 4. Pyranol 5. Savotal 6. Savol 7. Vegetable oil 8. Silicon liquids
state
gaseous
and
liquid
insulating
material
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51
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1
answer
asked
Sep 8, 2018
by
anonymous
What is piezoelectric effect? Name two piezoelectric material.
What is piezoelectric effect? Name two piezoelectric material.
Last answer:
piezoelectric effect: Piezoelectric effect can be stated as follows: when a pressure or force or vibration is applied to crystalline material like quartz crystal or crystalline substances, then ... crystal: Quartz crystal ,Rochelle salt 2) Synthetic crystals : Barium Titanate, Lithium sulphate
piezoelectric
effect
material
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52
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1
answer
asked
Sep 4, 2018
by
anonymous
Based on temperature withstanding ability, classify insulating material.
Based on temperature withstanding ability, classify insulating material.
Last answer:
class Temperature withstanding ability in 0C Materials Y 90 Cotton, silk paper and similar organic materials neither impregnated nor immersed in any oil, rubber, PVC. A 105 ... rubber compounds C Above 180 Mica, ceramics, glass, Teflon, quartz, etc.
temperature
ability
classify
insulating
material
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52
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1
answer
asked
Sep 4, 2018
by
anonymous
List four examples of insulating material and explain any two.
List four examples of insulating material and explain any two.
Last answer:
Examples of insulating materials: i) Solid: Ceramic, Porcelain, Mica, Glass, Rubber, Resinous, Fibers ii) Liquid: Synthetic, Mineral etc. iii) Gaseous: Hydrogen, Air, ... and low hygroscopicity. Uses: Insulation in electric field, transformer stampings, armature, pole stampings
examples
insulating
material
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38
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1
answer
asked
Sep 4, 2018
by
anonymous
What is amorphous metal material? Give any three properties of amorphous metal.
What is amorphous metal material? Give any three properties of amorphous metal.
Last answer:
Amorphous metal: The amorphous is metal alloy which differ in crystalline structure. The atoms are arranged in random configuration. Properties of amorphous metal: 1) Thermal conductivity of ... . 6) The alloy does not undergo shrinkage on solidification, which helps in bones attachments.
amorphous
metal
material
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50
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1
answer
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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1
answer
...