A fuse in a motor circuit provides protection against?

by

1 Answer

Answer :

A fuse in a motor circuit provides protection against short-circuit and overload.

by

Related questions

What is the purpose of Overload Protection in a motor circuit?

Description : What is the purpose of Overload Protection in a motor circuit?

Last Answer : Ans. The Overload Protection is used in a motor circuit to protect it from sustained over currents.

A fuse wire should have :

Description : 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

ln HRC fuse the time between cut-off and final current zero is called

Description : 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

The fuse blows off by?

Last Answer : The fuse blows off by melting.

The fuse rating is expressed in terms of?

Last Answer : The fuse rating is expressed in terms of current.

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.

A fuse is connected?

Last Answer : A fuse is connected in series with circuit.

The material used for fuse must have?

Last Answer : The material used for fuse must have low melting point and high specific resistance.

The main function of a fuse is to?

Last Answer : The main function of a fuse is to prevent excessive currents.

A relay used for protection of motors against overload is :

Description : 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

For protection of rotating machines against lightning surges _______ is used.

Description : For protection of rotating machines against lightning surges _______ is used.  (1) lightning arrester (2) capacitor (3) combination of lightning arrester and capacitor (4) lightning conductor and arrester

Last Answer : For protection of rotating machines against lightning surges combination of lightning arrester and capacitor is used. 

Reactance relay is normally preferred for protection against

Description : Reactance relay is normally preferred for protection against

Last Answer : Reactance relay is normally preferred for protection against earth faults

Surge absorbers are used for protection against

Description : Surge absorbers are used for protection against

Last Answer : Surge absorbers are used for protection against low voltage high frequency oscillations

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.

For the protection of power station buildings against direct strokes the requirements are?

Last Answer : For the protection of power station buildings against direct strokes the requirements are interception, conduction and dissipation.

A thermal protection switch can protect against?

Last Answer : A thermal protection switch can protect against overload.

If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens?

Last Answer : If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens this will make armature to take heavy current, possibly burning it.

Starting winding of a single phase motor of a refrigerator is disconnected from the circuit by means of a?

Last Answer : Starting winding of a single phase motor of a refrigerator is disconnected from the circuit by means of a magnetic relay.

Blind spot is a point in the zones of protection where

Description : Blind spot is a point in the zones of protection where

Last Answer : Blind spot is a point in the zones of protection where No protection is available.

A negative sequence relay is used for protection of

Description : 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 

Protection by fuses is generally not used beyond?

Last Answer : Protection by fuses is generally not used beyond 100 A .

Overfluxing protection is recommended for?

Last Answer : Overfluxing protection is recommended for generator transformer of the power plant.

Over voltage protection is recommended for?

Last Answer : Over voltage protection is recommended for hydro-electric generators, steam turbine generators, gas turbine generators.

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.

Discrimination between main and backup protection is provided by the use of relays which are?

Last Answer : Discrimination between main and back up protection is provided by the use of relays which are slow.

The delay fuses are used for the protection of?

Last Answer : The delay fuses are used for the protection of motors.

Primary and Backup Protection

Description : Primary and Backup Protection

Last Answer : Primary and Backup Protection  B,D,G,I are the primary protection. A,C,H,J are the backup protection. About 90% of faults are clear by Primary Protection. So ... ordinated backup (primary is at various station  and backup is at control room with computer)

What is fuse?

Description : 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.

State any two advantages of MCB over Fuse. State the standard specifications of MCB available in the market.

Description : 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 the material used for making (1) Magnetic Core (2) Fuse element

Description : 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 

Write applications of each of the following:(i) Fuse (ii) MCB (iii) MCCB.

Description : 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

Give the function of fuse and switch.

Description : 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.

What is a fuse ?

Description : What is a fuse ?

Last Answer :  A Fuse is a protective device which prevent overloading of current in a circuit.

what is HRC fuse?

Description : 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.

3 phase 11KV to 4 10000 KVA alternator has neutral Earth through a resistance of 1 ohm the machine has current balance protection while operate upon of balance Karan exceed 18% of full load determine percentage of winding and protected against ground fault

Description : 3 phase 11KV to 4 10000 KVA alternator has neutral Earth through a resistance of 1 ohm the machine has current balance protection while operate upon of balance Karan exceed 18% of full load determine percentage of winding and protected against ground fault

Can anyone recommend a good, durable protection case for iPod Touch 4th gen?

Description : Can anyone recommend a good, durable protection case for iPod Touch 4th gen?

Last Answer : I would highly recommend an Otterbox case. I have the Defender series case for my 3gen iPod touch. It's not perfect, but it provides better protection than any other case I've seen, and I like the ... ago, but that was only because I dropped my iPod and the case cracked. The ipod was fine though.

Protection scheme for internal faults in a three phase star delta connected transformer

Description : Protection scheme for internal faults in a three phase star delta connected transformer

Limitations of differential protection scheme of the altanetor

Description : Limitations of differential protection scheme of the altanetor

Car Leather Protection

Description : Car Leather Protection

Last Answer : Your girlfriend and your leather car interior have many things in common. Both are tough but incredibly sensitive. Both are cold and are very hard to please. Both need a lot of attention and ... differences too. Unlike your girlfriend, leather is not something you want to get down and dirty with.

Explain in detail over-voltage protection.

Description : Explain in detail over-voltage protection.

Last Answer : Over-voltage protection: Over-voltage protection to the thyristor is provided using: i) R-C Snubber circuit ii) Non-linear resistor Thyrector A) Snubber Circuit: It is basically a ... returns to its high resistance state. Thyrector is normally placed across the supply terminals.