What is a fuse ?

3 Answers

Answer :

This is a safety device which protect a circuit

Answer :

Device that melts/heats up in case of excess current

Answer :

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

Related questions

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

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

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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.

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.

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

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.

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

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

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

Last Answer : The fuse blows off by melting.

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

Last Answer : H.R.C. fuse, as compared to a rewirable fuse, has no ageing effect, high speed of operation, high rupturing capacity.

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

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

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

Description : State the necessity of fuse. 

Last Answer : Necessity of fuse in the circuit: The fuse is provided in an electric circuit to protect the apparatus connected to it from being damaged due to excessive current. If no fuse is provided in the ... case of fault a heavy current flows through the apparatus which may damage due to excessive current. 

Description : Fuse wire protection system is usually not used beyond: a. 10A b. 25A c. 50A d. 100A  

Last Answer : Fuse wire protection system is usually not used beyond: a. 10A b. 25A c. 50A d. 100A  

Description : The rating of fuse wire is always expressed in   (a) volts (b) amperes (c) ampere-volt (d) ampere-hours 

Last Answer : The rating of fuse wire is always expressed in Amperes 

Last Answer : A fuse is always installed in a circuit is Series.