The material used for a fuse wire should have (a) high resistivity (b) high ductility (c) high melting point (d) low melting point

The material used for a fuse wire should have (a) high resistivity (b) high ductility (c) high melting point (d) low melting point
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A Fuse wire is characterized by – (1) High resistance and low melting point (2) High resistance and high melting point (3) Low resistance and high melting point (4) Low resistance and low melting point

Description : A Fuse wire is characterized by – (1) High resistance and low melting point (2) High resistance and high melting point (3) Low resistance and high melting point (4) Low resistance and low melting point

Last Answer : (4) Low resistance and low melting point Explanation: A fuse is a type of low resistance resistor that acts as a sacrificial device to provide over current protection, of either the load or source ... melt if a current more than the safe current for the appliance starts flowing through the circuit.

The nature of .fuse wire is – (1) high resistance and low melting point. (2) high resistance and high melting point. (3) low resistance and high melting point. (4) low resistance and low melting point.

Description : The nature of .fuse wire is – (1) high resistance and low melting point. (2) high resistance and high melting point. (3) low resistance and high melting point. (4) low resistance and low melting point.

Last Answer : (1) high resistance and low melting point. Explanation: A fuse or fusable link works by opening an electrical circuit when the current becomes too high. As the current increases, the temperature ... be connected in series with the appliance. Besides, it should have a comparatively high resistance.

The melting point of fuse wire should be high or low?

Description : The melting point of fuse wire should be high or low?

Last Answer : low

A Fuse wire is characterised by (1) High resistance and low melting point (2) High resistance and high melting point (3) Low resistance and high melting point (4) Low resistance and low melting point

Description : A Fuse wire is characterised by (1) High resistance and low melting point (2) High resistance and high melting point (3) Low resistance and high melting point (4) Low resistance and low melting point

Last Answer : Low resistance and low melting point

The nature of fuse wire is (1) high resistance and low melting point. (2) high resistance and high melting point. (3) low resistance and high melting point. (4) low resistance and low melting point.

Description : The nature of fuse wire is (1) high resistance and low melting point. (2) high resistance and high melting point. (3) low resistance and high melting point. (4) low resistance and low melting point.

Last Answer : high resistance and low melting point.

Safety fuse wire used in domestic electrical appliances is made of metal of low (1) Resistance (2) Melting point (3) Specific gravity (4) Conductance

Description : Safety fuse wire used in domestic electrical appliances is made of metal of low (1) Resistance (2) Melting point (3) Specific gravity (4) Conductance

Last Answer : (2) Melting point Explanation: The fuse wire is based on the Joules law of heating which says that when the electric current is allowed to pass through a conductor, the conductor heats up and is ... . For this purpose the material used as fuse wire should have high resistance and low melting point.

Safety fuse wire used in domestic electrical appliances is made of metal of low (1) Resistance (2) Melting point (3) Specific gravity (4) Conductance

Description : Safety fuse wire used in domestic electrical appliances is made of metal of low (1) Resistance (2) Melting point (3) Specific gravity (4) Conductance

Last Answer : Melting point

The material used for fuse must have (a) low melting point and high specific resistance (b) low melting point and -low specific resistance (c) high melting point and low specific resistance (d) low melting point and any specific resistance

Description : The material used for fuse must have (a) low melting point and high specific resistance (b) low melting point and -low specific resistance (c) high melting point and low specific resistance (d) low melting point and any specific resistance

Last Answer : (a) low melting point and high specific resistance

Tick of the property, which is different from the group (A) Ductility. (B) Resistivity. (C) Tensile strength. (D) Hardness.

Description : Tick of the property, which is different from the group (A) Ductility. (B) Resistivity. (C) Tensile strength. (D) Hardness.

Last Answer : (B) Resistivity

Which of the following properties of a solid is not dependent on crystal imperfection? (A) Ductility (B) Semi-conductivity (C) Melting point (D) Yield stress

Description : Which of the following properties of a solid is not dependent on crystal imperfection? (A) Ductility (B) Semi-conductivity (C) Melting point (D) Yield stress

Last Answer : (C) Melting point

Which of the following low melting alloy containing bismuth and lead is used for electric fuse? (A) Wood's metal (B) Babbitt metal (C) Monel metal (D) Duralumin

Description : Which of the following low melting alloy containing bismuth and lead is used for electric fuse? (A) Wood's metal (B) Babbitt metal (C) Monel metal (D) Duralumin

Last Answer : Option A

Dielectric (A) Is an electrical insulating material (B) Of low resistivity is preferred (C) Should have high thermal conductivity (D) Need not defy the corrosive action of chemicals

Description : Dielectric (A) Is an electrical insulating material (B) Of low resistivity is preferred (C) Should have high thermal conductivity (D) Need not defy the corrosive action of chemicals

Last Answer : (A) Is an electrical insulating material

The insulating material should have (a) low permittivity (b) high resistivity (c) high dielectric strength (d) all of the above

Description : The insulating material should have (a) low permittivity (b) high resistivity (c) high dielectric strength (d) all of the above

Last Answer : (d) all of the above

An instantaneous-trip-type fuse will _____________. A. open as soon as the load current exceeds its set point B. allow a preset delay between overcurrent and melting C. open a circuit by using a time delay element with a magnetic trip D. reset itself when the overcurrent is corrected

Description : An instantaneous-trip-type fuse will _____________. A. open as soon as the load current exceeds its set point B. allow a preset delay between overcurrent and melting C. open a circuit by using a time delay element with a magnetic trip D. reset itself when the overcurrent is corrected

Last Answer : Answer: A

Since fuse elements are made of zinc or any alloy of tin and lead, the melting point of the fuse element must be _____________. A. higher than that of copper B. lower than that of copper C. equal to that of copper D. reached when the conductor it is protecting becomes 'white hot.'

Description : Since fuse elements are made of zinc or any alloy of tin and lead, the melting point of the fuse element must be _____________. A. higher than that of copper B. lower than that of copper C. equal to that of copper D. reached when the conductor it is protecting becomes 'white hot.'

Last Answer : Answer: B

Nichrome wire is used as a heating element I many appliances because (a) it can be drawn out into wires easily (b) it has high resistivity (c) it resists oxidation in air when red hot (d) both (b) and (c) are correct

Description : Nichrome wire is used as a heating element I many appliances because (a) it can be drawn out into wires easily (b) it has high resistivity (c) it resists oxidation in air when red hot (d) both (b) and (c) are correct

Last Answer : Ans:(d)

Why is it a poor practice to use a high wattage soldering iron when soldering or desoldering components on a printed circuit board? A. The circuit board will blister and warp. B. The foil wire bonded to the board may come loosened from the board. C. The circuit board has a low melting temperature. D. The solder is kept to a dull heat dissipating finish.

Description : Why is it a poor practice to use a high wattage soldering iron when soldering or desoldering components on a printed circuit board? A. The circuit board will blister and warp. B. The foil wire bonded ... board has a low melting temperature. D. The solder is kept to a dull heat dissipating finish.

Last Answer : Answer: B

Nichrome wire is used in an electric heater because _______. (1) It has high resistance (2) It has high melting point (3) It can resist a current upto approx 5 amperes (4) For all of the above reasons

Description : Nichrome wire is used in an electric heater because _______. (1) It has high resistance (2) It has high melting point (3) It can resist a current upto approx 5 amperes (4) For all of the above reasons

Last Answer : (4) For all of the above reasons

The most malleable, ductile low resistivity material is (A) Copper. (B) Aluminium. (C) Silver. (D) Iron.

Description : The most malleable, ductile low resistivity material is (A) Copper. (B) Aluminium. (C) Silver. (D) Iron.

Last Answer : (C) Silver.

Which material has low resistivity?

Description : Which material has low resistivity?

Last Answer : Silver have lowest resistivity then copper then aluminium tungsten then iron...

The ductility of metal is usually expressed in terms of the: A. Yield strength (point where the material is not longer elastic) B. Percent elongation C. Modulus of elasticity (stiffness of the material)

Description : The ductility of metal is usually expressed in terms of the: A. Yield strength (point where the material is not longer elastic) B. Percent elongation C. Modulus of elasticity (stiffness of the material)

Last Answer : B. Percent elongation

What length of an alloy wire of resistivity 5.0x10^-7 Ωm and diameter 0.50mm is required to make a standard 6.0Ω resistor?

Description : What length of an alloy wire of resistivity 5.0x10^-7 Ωm and diameter 0.50mm is required to make a standard 6.0Ω resistor?

Last Answer : Interesting homework question. I’m not knowledgeable about physics, but putting myself in the shoes of someone who is.. Why don’t you post the answer that you got, and show your work, and ask us where you went wrong on the problem.

Given that resistivity of copper is `1.68xx10^(-8) Omega`m. Calculate the amount of copper required to draw a wire 10 km long having resistance of `10

Description : Given that resistivity of copper is `1.68xx10^(-8) Omega`m. Calculate the amount of copper required to draw a wire 10 km long having resistance of `10

Last Answer : Given that resistivity of copper is `1.68xx10^(-8) Omega`m. Calculate the amount of copper required to draw a ... copper is `8.9xx10^(3) kg m^(-3)`.

A rheostat has 100 turns of a wire of radius 0.4 mm having resistivity `4.2xx10^(-7) Omega`m. The diameter of each turn is 3 cm. What is the maximum v

Description : A rheostat has 100 turns of a wire of radius 0.4 mm having resistivity `4.2xx10^(-7) Omega`m. The diameter of each turn is 3 cm. What is the maximum v

Last Answer : A rheostat has 100 turns of a wire of radius 0.4 mm having resistivity `4.2xx10^(-7) ... the maximum value of resistance that it can introduce ?

A wire of resistance `10 Omega` is drawn out so that its length is thrice its original length. Calculate its new resistance (resistivity and density o

Description : A wire of resistance `10 Omega` is drawn out so that its length is thrice its original length. Calculate its new resistance (resistivity and density o

Last Answer : A wire of resistance `10 Omega` is drawn out so that its length is thrice its original ... (resistivity and density of the material remain uncharged).

Calculate the electric field in a copper wire of cross-sectional area `2.0 mm^(2)` carrying a current of 1 A. The resistivity of copper `=1.7xx10^(-8)

Description : Calculate the electric field in a copper wire of cross-sectional area `2.0 mm^(2)` carrying a current of 1 A. The resistivity of copper `=1.7xx10^(-8)

Last Answer : Calculate the electric field in a copper wire of cross-sectional area `2.0 mm^(2)` carrying a current ... of copper `=1.7xx10^(-8) Omega`m.

Calculate the resistance of a 2 m long nichrome wire of radius 0.321 mm. Resistivity of nichrome is `15xx10^(-6) Omega` m. If a potential difference o

Description : Calculate the resistance of a 2 m long nichrome wire of radius 0.321 mm. Resistivity of nichrome is `15xx10^(-6) Omega` m. If a potential difference o

Last Answer : Calculate the resistance of a 2 m long nichrome wire of radius 0.321 mm. Resistivity of nichrome is ` ... wire, what will be the current in the wire ?

The resistance of a conductivity wire of length 1.1 m and of diameter 0.14 mm is `30 Omega`. Calculate its resistivity.

Description : The resistance of a conductivity wire of length 1.1 m and of diameter 0.14 mm is `30 Omega`. Calculate its resistivity.

Last Answer : The resistance of a conductivity wire of length 1.1 m and of diameter 0.14 mm is `30 Omega`. Calculate its resistivity.

A wire of 50 cm long, `1mm^(2)` in cross-section carries a current of 4 A, when connected to a 2 V battery, the resistivity of wire is

Description : A wire of 50 cm long, `1mm^(2)` in cross-section carries a current of 4 A, when connected to a 2 V battery, the resistivity of wire is

Last Answer : A wire of 50 cm long, `1mm^(2)` in cross-section carries a current of 4 A, when connected to a 2 V ... `4xx10^(-6)Omega-m` D. `1xx10^(-6)Omega-m`

The resistivity of a potentiometer wire is `40xx10^(-8)Omega-m` and its area of cross section is `8xx10^(-6)m^(2)`. If 0.2 A current is flowing throug

Description : The resistivity of a potentiometer wire is `40xx10^(-8)Omega-m` and its area of cross section is `8xx10^(-6)m^(2)`. If 0.2 A current is flowing throug

Last Answer : The resistivity of a potentiometer wire is `40xx10^(-8)Omega-m` and its area of cross section is `8xx10^(-6)m^(2)` ... . `3.2xx10^(-2)V//m` D. `1V//m`

A wire of uniform area of cross-section A length L and resistance R is cut into two parts. Resistivity of each part a. remains the same b. is doubled c. is halved d. becomes zero

Description : A wire of uniform area of cross-section A length L and resistance R is cut into two parts. Resistivity of each part a. remains the same b. is doubled c. is halved d. becomes zero

Last Answer : a. remains the same

resistivity of wire depend on?

Description : resistivity of wire depend on?

Last Answer : Resitivity of wire depends on material, electrical resistance of that material, area of cross section and length.

What is the function of a fuse wire? (a) To prevent an unduly high electric current from passing through a circuit (b) To increase the current supply (c) To decrease the current supply (d) To stabilise the voltage

Description : What is the function of a fuse wire? (a) To prevent an unduly high electric current from passing through a circuit (b) To increase the current supply (c) To decrease the current supply (d) To stabilise the voltage

Last Answer : Ans:(a)

Example of high resistivity material is (A) Nichrome (B) Silver (C) Gold (D) Copper

Description : Example of high resistivity material is (A) Nichrome (B) Silver (C) Gold (D) Copper

Last Answer : (A) Nichrome

Define – resistance and resistivity. State relationship between them. Give one material having high resistivity.

Description : Define – resistance and resistivity. State relationship between them. Give one material having high resistivity.

Last Answer : Ans: Resistance and Resistivity: Resistance: It is the opposition offered by the conductor to the flow of current. Resistivity: It is property of the substance by virtue of which it opposes to ... high resistivity: Mica, Nichrom, Rubber, Glass, Plastic Porcelain, Dry wood, Insulating material etc.

Mild steel is (A) A low carbon steel (0.05 to 0.3% carbon) (B) Highly resistant to corrosion (as much as stainless steel) (C) A high carbon steel (0.5 to 1.5% carbon) (D) Very poor in strength & ductility

Description : Mild steel is (A) A low carbon steel (0.05 to 0.3% carbon) (B) Highly resistant to corrosion (as much as stainless steel) (C) A high carbon steel (0.5 to 1.5% carbon) (D) Very poor in strength & ductility

Last Answer : (A) A low carbon steel (0.05 to 0.3% carbon)

Distortion or change in shape of a cast partial denture clasp during its clinical use probably indicates that the: A. Ductility was too low B. Hardness was too great C. Ultimate tensile strength was too low D. Tension temperature was too high E. Elastic limit was exceeded

Description : Distortion or change in shape of a cast partial denture clasp during its clinical use probably indicates that the: A. Ductility was too low B. Hardness was too great C. Ultimate tensile strength was too low D. Tension temperature was too high E. Elastic limit was exceeded

Last Answer : E. Elastic limit was exceeded

Coke used for the production of calcium carbide should have (A) Low ash content (B) Low ignition temperature (C) High electrical resistivity (D) All (A), (B) and (C)

Description : Coke used for the production of calcium carbide should have (A) Low ash content (B) Low ignition temperature (C) High electrical resistivity (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Pick out the wrong statement. (A) A soft magnetic material should have high permeability and small area of hysteresis loop (B) Poisson's ratio of high melting point metals is more than unity (C) Solders generally melt at less than 185°C (D) Steel produced by B.O.F process is ideally suited for manufacturing flat product

Description : Pick out the wrong statement. (A) A soft magnetic material should have high permeability and small area of hysteresis loop (B) Poisson's ratio of high melting point metals is more than unity (C) ... less than 185°C (D) Steel produced by B.O.F process is ideally suited for manufacturing flat product

Last Answer : Option B

Pick out the wrong statement. (A) Bronze is an alloy of copper & tin (B) Brass is an alloy of copper & zinc (C) The alloy named 'German silver' does not contain any silver (D) The ability of a material to fracture without appreciable deformation is called its ductility

Description : Pick out the wrong statement. (A) Bronze is an alloy of copper & tin (B) Brass is an alloy of copper & zinc (C) The alloy named 'German silver' does not contain any silver (D) The ability of a material to fracture without appreciable deformation is called its ductility

Last Answer : (D) The ability of a material to fracture without appreciable deformation is called its ductility

Work hardening of a material (A) Decreases its tensile strength (B) Decreases its ductility (C) Increases its ductility (D) Does not affect its ductility

Description : Work hardening of a material (A) Decreases its tensile strength (B) Decreases its ductility (C) Increases its ductility (D) Does not affect its ductility

Last Answer : (B) Decreases its ductility

Percentage elongation of a material is a measure of its (A) Ductility (B) Brittleness (C) Toughness (D) Malleability

Description : Percentage elongation of a material is a measure of its (A) Ductility (B) Brittleness (C) Toughness (D) Malleability

Last Answer : (A) Ductility

Ability of a material to absorb energy in deformation in the plastic range is characterised as its (A) Ductility (B) Toughness (C) Creep (D) Resilience

Description : Ability of a material to absorb energy in deformation in the plastic range is characterised as its (A) Ductility (B) Toughness (C) Creep (D) Resilience

Last Answer : (B) Toughness

A material is able to retain the deformation permanently by virtue of its (A) Elasticity (B) Plasticity (C) Ductility (D) Malleability

Description : A material is able to retain the deformation permanently by virtue of its (A) Elasticity (B) Plasticity (C) Ductility (D) Malleability

Last Answer : (B) Plasticity

__________ of a material results, when its strength is increased & ductility is decreased by heating at a relatively lower temperature after cold working. (A) Solid solution hardening (B) Screw dislocation (C) Strain ageing (D) Twinning

Description : __________ of a material results, when its strength is increased & ductility is decreased by heating at a relatively lower temperature after cold working. (A) Solid solution hardening (B) Screw dislocation (C) Strain ageing (D) Twinning

Last Answer : (C) Strain ageing

The ability of a material to be formed by hammering or rolling is known as _________ a) Malleability b) Ductility c) Harness d) Brittleness

Description : The ability of a material to be formed by hammering or rolling is known as _________ a) Malleability b) Ductility c) Harness d) Brittleness

Last Answer : a) Malleability

The property of a material by which it can be beaten or rolled into thin plates, is called (A) Malleability (B) Ductility (C) Plasticity (D) Elasticity

Description : The property of a material by which it can be beaten or rolled into thin plates, is called  (A) Malleability  (B) Ductility  (C) Plasticity  (D) Elasticity

Last Answer : (A) Malleability 

The property of a material by which it can be drawn to a smaller section, due to tension, is called (A) Plasticity (B) Ductility (C) Elasticity (D) Malleability

Description : The property of a material by which it can be drawn to a smaller section, due to tension, is called (A) Plasticity (B) Ductility (C) Elasticity (D) Malleability

Last Answer : (B) Ductility

The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the (A) Resilience (B) Toughness (C) Ductility (D) Impact strength

Description : The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the (A) Resilience (B) Toughness (C) Ductility (D) Impact strength

Last Answer : (A) Resilience