The material used in electric heater is (1) Tungsten (2) Nichrome (3) Brass (4) Steel

The material used in electric heater is (1) Tungsten (2) Nichrome (3) Brass (4) Steel
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(2) Nichrome Explanation: Due to its resistance to oxidation and stability at high temperatures, Nichrome is widely used in electic heating elements, such as in appliances and tools. Typically, nichrome is wound in coils to a certain electrical resistance, and current is passed through it to produce heat.
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The material used in electric heater is (1) Tungsten (2) Nichrome (3) Brass (4) Steel

Description : The material used in electric heater is (1) Tungsten (2) Nichrome (3) Brass (4) Steel

Last Answer : Nichrome

Heating element of an electric heater is made up of _____? A. Tungsten B. Graphite C. Chromium 26 D. Nichrome

Description : Heating element of an electric heater is made up of _____? A. Tungsten B. Graphite C. Chromium 26 D. Nichrome

Last Answer : ANSWER: D

Heating element of an electric heater is made up of------? A. Tungsten B. Graphite C. Chromium D. Nichrome (Answer)

Description : Heating element of an electric heater is made up of------? A. Tungsten B. Graphite C. Chromium D. Nichrome (Answer)

Last Answer : D. Nichrome (Answer)

The material used in the filament of electric bulbs is (A) Nichrome (B) Tungsten (C) Constantan (D) German silver

Description : The material used in the filament of electric bulbs is (A) Nichrome (B) Tungsten (C) Constantan (D) German silver

Last Answer : (B) Tungsten

Which of the following metals is used for the manufacture of heating elements provided in electric iron? (1) Nickel (2) Chromium (3) Nichrome (4) Tungsten

Description : Which of the following metals is used for the manufacture of heating elements provided in electric iron? (1) Nickel (2) Chromium (3) Nichrome (4) Tungsten

Last Answer : (3) Nichrome Explanation: Nichrome is the most common domestic heating element and is found in many household products. Commonly, items such as toasters, hair dryers and heaters use nichrome coils to ... percent nickel and 20 percent chromium, and its high melting point of 1,400 degrees Celsius.

The filament of electric bulb is made of (1) Iron (2) Nichrome (3) Tungsten (4) Graphite

Description : The filament of electric bulb is made of (1) Iron (2) Nichrome (3) Tungsten (4) Graphite

Last Answer : (3) Tungsten Explanation: The filament is the part of the light bulb that produces light. Filaments in incandescent light bulbs are made of tungsten.

The filament of electric bulb is made up of : (1) Copper (2) Nichrome (3) Lead (4) Tungsten

Description : The filament of electric bulb is made up of : (1) Copper (2) Nichrome (3) Lead (4) Tungsten

Last Answer : (4) Tungsten Explanation: An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light which produces light with a filament wire heated to a high temperature by an electric ... through it, until it glows. Tungsten, also known as wolfram, is a chemical element.

The filament of electric bulb is made up of : (1) Copper (2) Nichrome (3) Lead (4) Tungsten

Description : The filament of electric bulb is made up of : (1) Copper (2) Nichrome (3) Lead (4) Tungsten

Last Answer : Tungsten

Which of the following metals is used for the manufacture of heating elements provided in electric iron ? (1) Nickel (2) Chromium (3) Nichrome (4) Tungsten

Description : Which of the following metals is used for the manufacture of heating elements provided in electric iron ? (1) Nickel (2) Chromium (3) Nichrome (4) Tungsten

Last Answer : Nichrome

What material is used to make electric heater coil? (1) Copper (2) Iron (3) Silver (4) Nichrome

Description : What material is used to make electric heater coil? (1) Copper (2) Iron (3) Silver (4) Nichrome

Last Answer : (4) Nichrome Explanation: Nichrome is a non-magnetic alloy of nickel, chromium, and often iron, usually used as a resistance wire. Patented in 1905, it is the oldest documented form of resistance heating ... is corrosion-resistant, and has a high melting point of about 1400 degree C (2552 degree F).

What material is used to make electric heater coil ? (1) Copper (2) Iron (3) Silver (4) Nichrome

Description : What material is used to make electric heater coil ? (1) Copper (2) Iron (3) Silver (4) Nichrome

Last Answer : Nichrome

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 heating element in an electric iron is made of (a) Nichrome (b) Tungsten (c) Copper (d) Iron

Description : The heating element in an electric iron is made of (a) Nichrome (b) Tungsten (c) Copper (d) Iron

Last Answer : Ans:(a)

An electric iron has a heating element made of – (1) Copper (2) Tungsten (3) Nichrome (4) Zinc

Description : An electric iron has a heating element made of – (1) Copper (2) Tungsten (3) Nichrome (4) Zinc

Last Answer : (3) Nichrome Explanation: Nichrome is used in electric iron because it has high resistance and it is stable in air when hot. Nichrome wire forms a protective layer of chromium oxide. Chemically it is quite stable and does not combine with other atmospheric gases even in high temperature.

An electric iron has a heating element made of : (1) Copper (2) Tungsten (3) Nichrome (4) Zinc

Description : An electric iron has a heating element made of : (1) Copper (2) Tungsten (3) Nichrome (4) Zinc

Last Answer : Nichrome

Tick off the material, which is different from the group (A) Constantan. (B) Manganin. (C) Nichrome. (D) Brass.

Description : Tick off the material, which is different from the group (A) Constantan. (B) Manganin. (C) Nichrome. (D) Brass.

Last Answer : (D) Brass.

Beams of hyperbolic cooling towers are made up of a) Tungsten b) Iron c) Stainless steel d) Brass

Description : Beams of hyperbolic cooling towers are made up of a) Tungsten b) Iron c) Stainless steel d) Brass

Last Answer : c) Stainless steel

An alloy used in making heating elements for electric heating device is - (1) Solder (2) Alloy Steel (3) Nichrome (4) German Silver

Description : An alloy used in making heating elements for electric heating device is - (1) Solder (2) Alloy Steel (3) Nichrome (4) German Silver

Last Answer : (3) Nichrome Explanation: Nichrome is a mixture of chromium and nickel. Nichrome wire is a great conductor of electricity. Nichrome is used to make heating coils and other types of elements in household appliances.

An alloy used in making heating elements for electric heating device is (1) Solder (2) Alloy Steel (3) Nichrome (4) German Silver

Description : An alloy used in making heating elements for electric heating device is (1) Solder (2) Alloy Steel (3) Nichrome (4) German Silver

Last Answer : Nichrome

A nichrome wire used as heater coil has the resistance of 1 ohm/m. For ...

Description : A nichrome wire used as heater coil has the resistance of 1 ohm/m. For a heater of 1000 W at 200 V, the length of wire required will be 

Last Answer : A nichrome wire used as heater coil has the resistance of 1 ohm/m. For a heater of 1000 W at 200 V, the length of wire required will be 40 m.

Pick out the wrong statement. (A) Alloys are harder than their component elements (B) Presence of silicon in steel decreases its electrical resistance (C) Karbate is an acid resistant material of construction (D) Nichrome, a steel alloyed with 10% Ni and 20% Cr can be used upto a temperature of 1100°C

Description : Pick out the wrong statement. (A) Alloys are harder than their component elements (B) Presence of silicon in steel decreases its electrical resistance (C) Karbate is an acid resistant material of construction ... , a steel alloyed with 10% Ni and 20% Cr can be used upto a temperature of 1100°C

Last Answer : (B) Presence of silicon in steel decreases its electrical resistance

Hardest material is - (1) Tungsten (2) Diamond (3) Steel (4) Graphite

Description : Hardest material is - (1) Tungsten (2) Diamond (3) Steel (4) Graphite

Last Answer : (2) Diamond Explanation: Diamondsare commonly known as the hardest substance on earth, used in drill bits for cutting applications.

_________ is the hardest material out of the following. (A) Boron carbide (B) Tungsten carbide (C) Hardened steel (D) Silicon carbide

Description : _________ is the hardest material out of the following. (A) Boron carbide (B) Tungsten carbide (C) Hardened steel (D) Silicon carbide

Last Answer : (A) Boron carbide

Pick out the wrong statement. (A) A ferromagnetic material becomes paramagnetic above the 'Curie temperature' (B) Permanent magnets are made of hard materials, whereas electromagnets require soft magnetic materials (C) Soft magnetic materials (e.g., pure iron) have higher permeability and low hysterisis loss and coercive forces (D) Tungsten steel and alnico are not hard magnetic materials

Description : Pick out the wrong statement. (A) A ferromagnetic material becomes paramagnetic above the 'Curie temperature' (B) Permanent magnets are made of hard materials, whereas electromagnets require soft ... hysterisis loss and coercive forces (D) Tungsten steel and alnico are not hard magnetic materials

Last Answer : Option D

Anodic material used for the cathodic protection of underground buried steel pipeline is (A) Nickel or copper (B) Zinc or magnesium (C) Bronze (D) Brass

Description : Anodic material used for the cathodic protection of underground buried steel pipeline is (A) Nickel or copper (B) Zinc or magnesium (C) Bronze (D) Brass

Last Answer : (B) Zinc or magnesium

A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material? (A) Steel (B) Glass (C) Rubber (D) Brass

Description : A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material? (A) Steel (B) Glass (C) Rubber (D) Brass

Last Answer : Option A

The material generally used for armour of high voltage cables is (a) aluminium (b) steel (c) brass (d) copper

Description : The material generally used for armour of high voltage cables is (a) aluminium (b) steel (c) brass (d) copper

Last Answer : (b) steel

The material generally used for armour of high voltage cables is (a) aluminium (b) steel (c) brass (d) copper

Description : The material generally used for armour of high voltage cables is (a) aluminium (b) steel (c) brass (d) copper

Last Answer : (b) steel

Tungsten is used for the manufacture of the filament of an electric bulb, because – (1) It is a good conductor (2) It is economical (3) It is malleable (4) It has a very high melting point

Description : Tungsten is used for the manufacture of the filament of an electric bulb, because – (1) It is a good conductor (2) It is economical (3) It is malleable (4) It has a very high melting point

Last Answer : (4) It has a very high melting point Explanation: Tungsten is used because it has the highest melting point of all the metallic elements. It melts at 3410 degrees Celsius. When current passes ... bulb. The first successful light bulb filaments were made of carbon (from carbonized paper or bamboo).

Tungsten is used for the manufacture of the filament of an electric bulb, because (1) It is a good conductor (2) It is economical (3) It is malleable (4) It has a very high melting point

Description : Tungsten is used for the manufacture of the filament of an electric bulb, because (1) It is a good conductor (2) It is economical (3) It is malleable (4) It has a very high melting point

Last Answer : It has a very high melting point

High resistance electrical heating elements/wire are not made of (A) Maraging steel (B) Nimonic alloys (C) Kanthal wire (D) Nichrome

Description : High resistance electrical heating elements/wire are not made of (A) Maraging steel (B) Nimonic alloys (C) Kanthal wire (D) Nichrome

Last Answer : (A) Maraging steel

An electric toaster uses nichrome for its heating element. When a negligibly small current passes through it. It resistance at room temperature `(27.0

Description : An electric toaster uses nichrome for its heating element. When a negligibly small current passes through it. It resistance at room temperature `(27.0

Last Answer : An electric toaster uses nichrome for its heating element. When a negligibly small current passes through it. ... range involved , `1.70xx10^-4C^-1`

The heating elements of electric irons are made of (A) Copper. (B) Nichrome. (C) Constantan. (D) Aluminium.

Description : The heating elements of electric irons are made of (A) Copper. (B) Nichrome. (C) Constantan. (D) Aluminium.

Last Answer : (B) Nichrome.

At ‘yield point’ of a copper wire A. the load hasn't exceeded the elastic limit yet; so, Hooke's law applies B. the load has already exceeded the elastic limit and the material has become plastic C. even the plastic stage has passed and the wire has snapped already D. Like Brass and Bronze, Copper has no yield poin

Description : At yield point' of a copper wire A. the load hasn't exceeded the elastic limit yet; so, Hooke's law applies B. the load has already exceeded the elastic limit and the material has become ... stage has passed and the wire has snapped already D. Like Brass and Bronze, Copper has no yield poin

Last Answer : the load has already exceeded the elastic limit and the material has become plastic

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

The material with lowest resistivity is (A) constantan. (B) silver. (C) manganin. (D) nichrome.

Description : The material with lowest resistivity is (A) constantan. (B) silver. (C) manganin. (D) nichrome.

Last Answer : (B) silver.

For which of the following substances, the resistance decreases with increase in temperature? (1) Pure silicon (2) Copper (3) Nichrome (4) Platinum

Description : For which of the following substances, the resistance decreases with increase in temperature? (1) Pure silicon (2) Copper (3) Nichrome (4) Platinum

Last Answer : (3) Nichrome Explanation: Nichrome has high resistance and it is called a resistor.

For which of the following substances, the resistance decreases with increase in temperature? (1) Pure silicon (2) Copper (3) Nichrome (4) Platinum

Description : For which of the following substances, the resistance decreases with increase in temperature? (1) Pure silicon (2) Copper (3) Nichrome (4) Platinum

Last Answer : Nichrome

A composite wire is prepared by joining a tungsten wire and steel wire end to end. Both the wires are of the same

Description : A composite wire is prepared by joining a tungsten wire and steel wire end to end. Both the wires are of the same

Last Answer : A composite wire is prepared by joining a tungsten wire and steel wire end to end. Both the wires are of ... 1011 Pa, YTungsten = 4.11 1011 Pa]

Which of the following would be most suitable for making an electromagnet? (a) Copper (b) Tungsten (c) Soft iron (d) Steel

Description : Which of the following would be most suitable for making an electromagnet? (a) Copper (b) Tungsten (c) Soft iron (d) Steel

Last Answer : Ans:(c)

Which of the following elements is not present in stainless steel? (1) Iron (2) Tungsten (3) Chromium (4) Nickel

Description : Which of the following elements is not present in stainless steel? (1) Iron (2) Tungsten (3) Chromium (4) Nickel

Last Answer : (2) Tungsten Explanation: Stainless steel is defined as a steel alloy of iron with a minimum of 10.5% to 11% chromium content by mass. There are different types of stainless steels: ... stabilized. This crystal structure makes such steels virtually non-magnetic and less brittle at low temperatures.

Which of the following alloy steels is the most suitable for making gun barrels and projectiles? (A) Tungsten steel (B) Molybdenum steel (C) Nickel-chrome steel (D) Cobalt steel

Description : Which of the following alloy steels is the most suitable for making gun barrels and projectiles? (A) Tungsten steel (B) Molybdenum steel (C) Nickel-chrome steel (D) Cobalt steel

Last Answer : (C) Nickel-chrome steel

Residual magnetism in steel for magnets is increased by the addition of (A) Nickel (B) Cobalt (C) Tungsten (D) Chromium

Description : Residual magnetism in steel for magnets is increased by the addition of (A) Nickel (B) Cobalt (C) Tungsten (D) Chromium

Last Answer : (B) Cobalt

Addition of tungsten to steel imparts (A) Magnetic properties (B) Cutting hardness (C) Corrosion resistance (D) Ductility

Description : Addition of tungsten to steel imparts (A) Magnetic properties (B) Cutting hardness (C) Corrosion resistance (D) Ductility

Last Answer : (B) Cutting hardness

Corrosion resistance of steel is increased by the addition of (A) Phosphorous and tungsten (B) Nickel and chromium (C) Lead and vanadium (D) Molybdenum and tungsten

Description : Corrosion resistance of steel is increased by the addition of (A) Phosphorous and tungsten (B) Nickel and chromium (C) Lead and vanadium (D) Molybdenum and tungsten

Last Answer : (B) Nickel and chromium

__________ can replace tungsten in high speed steel, (A) Chromium (B) Vanadium (C) Cobalt (D) Molybdenum

Description : __________ can replace tungsten in high speed steel, (A) Chromium (B) Vanadium (C) Cobalt (D) Molybdenum

Last Answer : (D) Molybdenum

Addition of __________ in steel can help in increasing the depth of hardness. (A) Nickel (B) Chromium (C) Vanadium (D) Tungsten

Description : Addition of __________ in steel can help in increasing the depth of hardness. (A) Nickel (B) Chromium (C) Vanadium (D) Tungsten

Last Answer : (D) Tungsten

Which of the following alloying elements is present in maximum percentage in high speed steel? (A) Molybdenum (B) Chromium (C) Tungsten (D) Vanadium

Description : Which of the following alloying elements is present in maximum percentage in high speed steel? (A) Molybdenum (B) Chromium (C) Tungsten (D) Vanadium

Last Answer : (C) Tungsten

Hypersil' is a __________ steel. (A) High speed (B) Silicon (C) Molybdenum (D) Tungsten

Description : Hypersil' is a __________ steel. (A) High speed (B) Silicon (C) Molybdenum (D) Tungsten

Last Answer : (B) Silicon

Addition of __________ to the steel helps in increasing the residual magnetism in steel used for making magnets. (A) Chromium (B) Nickel (C) Tungsten (D) Cobalt

Description : Addition of __________ to the steel helps in increasing the residual magnetism in steel used for making magnets. (A) Chromium (B) Nickel (C) Tungsten (D) Cobalt

Last Answer : (D) Cobalt