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
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May 7, 2020
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anonymous
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
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392 views
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Apr 30, 2018
by
anonymous
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.
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131 views
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May 5, 2020
by
anonymous
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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.
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213 views
1 answer
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Sep 6, 2018
by
anonymous
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
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1 answer
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Sep 5, 2018
by
anonymous
Last Answer : The insulating material used between the commutator segments is normally mica.
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268 views
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Mar 20, 2018
by
anonymous
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
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113 views
1 answer
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May 8, 2018
by
anonymous
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
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139 views
1 answer
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Apr 26, 2018
by
anonymous
Last Answer : A fuse in a motor circuit provides protection against short-circuit and overload.
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157 views
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Mar 20, 2018
by
anonymous
Last Answer : The fuse blows off by melting.
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72 views
1 answer
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Mar 20, 2018
by
anonymous
Last Answer : The fuse rating is expressed in terms of current.
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151 views
1 answer
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Mar 20, 2018
by
anonymous
Last Answer : H.R.C. fuse, as compared to a rewirable fuse, has no ageing effect, high speed of operation, high rupturing capacity.
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118 views
1 answer
asked
Mar 20, 2018
by
anonymous
Last Answer : A fuse is connected in series with circuit.
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Mar 20, 2018
by
anonymous
Last Answer : The main function of a fuse is to prevent excessive currents.
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93 views
1 answer
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Mar 19, 2018
by
anonymous
What is fuse?
Last Answer : Ans. Fuse is used to protect an electric circuit when the rated current exceeds in the circuit the fuse wire melts and opens the circuit.
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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
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193 views
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May 7, 2020
by
anonymous
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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
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148 views
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Apr 27, 2020
by
anonymous
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.
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120 views
1 answer
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Apr 27, 2020
by
anonymous
What is a fuse ?
Last Answer : A Fuse is a protective device which prevent overloading of current in a circuit.
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125 views
3 answers
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Aug 24, 2019
by
anonymous
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.
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153 views
1 answer
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Aug 8, 2017
by
anonymous
Light triggering is mainly used in
Last Answer : Light triggering is mainly used in High voltage direct current transmission
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1 answer
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May 8, 2018
by
anonymous
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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 : D
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547 views
2 answers
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May 8, 2018
by
anonymous
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
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1 answer
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May 8, 2018
by
anonymous
Auto reclosing is used in case of
Last Answer : Auto reclosing is used in case of air blast C.B.
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May 3, 2018
by
anonymous
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
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627 views
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May 1, 2018
by
anonymous
IDMT relays are used to protect the transformer against : (A) Internal short -circuits (B) Open circuits (C) External short circuits (D) Oil leakage
Last Answer : IDMT relays are used to protect the transformer against : External short circuits
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Apr 30, 2018
by
anonymous
Series reactors are used to
Last Answer : Series reactors are used to bring down the fault level within the capacity of the switchgear
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1 answer
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Apr 26, 2018
by
anonymous
ln a minimum oil circuit breaker the oil is used
Last Answer : ln a minimum oil circuit breaker the oil is used to act as circuit breaking medium only
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1 answer
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Apr 26, 2018
by
anonymous
Regulating-transformers are used in power systems for control of
Last Answer : Regulating-transformers are used in power systems for control of power flow
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1 answer
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Apr 26, 2018
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anonymous
Surge absorbers are used for protection against
Last Answer : Surge absorbers are used for protection against low voltage high frequency oscillations
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1 answer
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Apr 26, 2018
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anonymous
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Last Answer : A switchgear is device used for switching, controlling and protecting the electrical circuit and equipment.
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258 views
1 answer
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Mar 20, 2018
by
anonymous
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Last Answer : Series capacitors are used to compensate for line inductive reactance.
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1 answer
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Mar 20, 2018
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anonymous
Last Answer : The inverse definite mean time relays are used for over current and earth fault protection of transformer against internal short-circuits.
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1 answer
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Mar 20, 2018
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anonymous
Last Answer : The single phasing relays are used for the protection of three phase motors.
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1 answer
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Mar 20, 2018
by
anonymous
Last Answer : The under voltage relay can be used for generators, busbars, transformers, motors.
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1 answer
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Mar 20, 2018
by
anonymous
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Last Answer : Impedance relays are used for phase faults on long line.
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1 answer
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Mar 20, 2018
by
anonymous
Last Answer : A.C. network analyser is used to solve problems of load flow, short-circuit and stability.
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Mar 20, 2018
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anonymous
Last Answer : Wave trap is used to trap waves of higher frequencies entering generator or transformer units.
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1 answer
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Mar 20, 2018
by
anonymous
Last Answer : Air blast circuit breaker is used for repeated duty.
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1 answer
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Mar 19, 2018
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anonymous
evergreen decking material
Last Answer : To do away from the problems associated with wood, such as high costs and decaying, alternative materials were introduced to the deck-builder market. Composite materials are the most popular among these ... driver can damage the groove edge of the board; aregular decking screw can be used instead.
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1 answer
boat decking material
Last Answer : You love staying in the upper deck of your boat while going on a cruise. It serves as your shelter from rain or direct sunlight, at the same time, it treats you to a great view of vast ... When the outer shell is surfaced with a weatherproof material, metal and wood as frames are not much different.
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The Guide to Decking Material
Last Answer : Let's face it. The worst enemy of our home's interior are our kids and pets. All that's required to maintain the inside of our home is a little dusting, vacuuming and cleaning. For the ... of them come in various solid colors, which may work to your advantage when trying to cut painting costs.
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1 answer
wood decking material
Last Answer : Most builders choose wood as the main material for decks for several reasons. With proper treatment, wood is expected to last for years without needing any kind of repair. It is also ... for their expensive prices, all people should be encouraged to purchase natural wood decking materials only.
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1 answer
plastic decking material
Last Answer : Modern times call for modern solutions. If before, wood was the only material used to make decks, innovative alternatives are now available to avoid the problems associated with wood. Alternative materials ... with plastic decking materials; you don't need special tools to install them in your home.
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1 answer
decking material prices
Last Answer : Adding a deck to your house provides you with a new place to lounge around and host parties and improve the look of your home. Various materials may be used to build the deck. Naturally, prices also ... tend to have a trade-off in aesthetic quality, if not on the caliber of the very structure.
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1 answer
composite decking material
Last Answer : If you plan to add a new deck to your home, you're probably thinking about what material to use. Most people would look no further and will instantly get hardwood like Cedar and Redwood. ... against innovations, such a type of material is a very welcome development in the world of deck building.
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1 answer
best decking material
Last Answer : Today, homeowners are not only limited to choosing wood as the main material for their new deck. More modern materials such as composites and plastic are also available. The obvious question is ... decking material still depends on what you need and which among the factors above is your priority.
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1 answer
alternative decking material
Last Answer : Wood is the most popular decking material. It has the perfect fusion of beauty and firmness, so we need not ask why it is still the main choice of deck builders. Wood can also be ... your neighbors, consider using alternative decking materials, such as Veranda boards, when building your own deck.
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1 answer
Overalls. Which material is better?
Last Answer : Material is the most important factor to look out for when choosing workwear. Usually cotton, polyester or blended fabrics are chosen for the manufacture of workwear. Each option has ... , operating conditions and personal preferences. Work clothes should provide employees with comfort and safety.
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1 answer
asked
Mar 29, 2021
by
anonymous
What material should children's furniture be made of?
Last Answer : The most ideal option is furniture made from natural wood. Such material is environmentally friendly, however, many varieties of valuable species are quite expensive. In view of the limited family ... your liking, because, despite its versatility and safety, it should please and bring pleasure.
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asked
Mar 29, 2021
by
anonymous
