Description : Silicon is a _____. A. Superconductor B. Conductor C. Semi-conductor D. Insulator
Last Answer : ANSWER: C
Description : At low temperature, Lead behaves as a (1) Semi conductor (2) Super conductor (3) Insulator (4) Conductor
Last Answer : (2) Super conductor Explanation: Lead exhibit superconducting phase transitions at low temperatures of 7.2 Kelvin. This discovery was made in 1913. At this temperature (known as critical temperature), ... to a different phase of matter; this superconducting phase is described by the BCS theory.
Description : Solids which conduct electricity at higher temperature but not at lower temperature are called (1) super-conductor (2) metallic-conductor (3) semi-conductor (4) insulator
Last Answer : (3) semi-conductor Explanation: Semiconductors are insulators at low temperatures and reasonably good conductors at higher temperatures. As temperature increases, the semiconductor material becomes a better and better conductor.
Last Answer : (2) Super conductor Explanation: Lead exhibit super conducting phase transitions at low temperatures of 7.2 Kelvin. This discovery was made in 1913.
Description : What is the order of energy gap in a conductor, semi conductor, and insulator?.
Last Answer : Conductor - no energy gap Semi Conductor - It is of the order of 1 ev. Insulator - 6 ev (or) more than 6 ev.
Description : The electrode for a battery must be A. A semi conductor B. An insulator C. A good conductor of electricity D. A bad conductor of electricity
Last Answer : C. A good conductor of electricity
Description : Due to self-inductance, the coil wires are known as: a. Insulator b. Conductor c. Inductor d. Semi-conductor
Last Answer : c. Inductor
Description : At low temperature, Lead behaves as a : (1) Semi conductor (2) Super conductor (3) Insulator (4) Conductor
Last Answer : Super conductor
Last Answer : semi-conductor
Description : Electrical conductivities of semi-conductors are of the order of __________ ohm/cm. (A) 10-3 (B) 103 (C) 10-15 (D) 1015
Last Answer : OptionA
Description : Which material is having highest resistivity in ohm-metre at 20oC X10-8? A. Mercury B. Iron C. Tungsten D. Silver
Last Answer : Mercury material is having highest resistivity in ohm-metre at 20oC X10-8
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 ?
Last Answer : conductor Money Conductor , guide , electrically conductive , cm _ _ _ Contactor Money Pre Director , Insulator Money Non-conductive Objects.
Description : The resistivity of a material with resistance 200 ohm, length 10m and area twice that of the length is a) 200 b) 300 c) 400 d) 500
Last Answer : c) 400
Description : SI unit of resistivity is a. ohm b. Ohm×m c. Ohm×m-1 d. Ohm×m2
Last Answer : c. Ohm×m-1
Description : During coal carbonisation process, the conversion of semi-coke to coke is accompanied by an increase in the __________ of the mass. (A) Density (B) Porosity (C) Electrical resistivity (D) None of these
Last Answer : (A) Density
Description : A wire having very high value of conductance is said to be a. very good conductor b. moderately good conductor c. an insulator d. None
Last Answer : a. very good conductor
Description : A tube of uniform cross sectional sectional area `1 cm^(2)` is closed at one end with semi permeable membrane. A solution having 6g glucose per 100 ml
Last Answer : A tube of uniform cross sectional sectional area `1 cm^(2)` is closed at one end with semi permeable membrane. A ... k^(-1)`, density of Hg=13.8 g/cc)
Description : Graphite is a good (A) Thermal & electrical insulator (B) Conductor of heat (C) Conductor of electricity (D) Both (B) & (C)
Last Answer : (D) Both (B) & (C)
Description : A potentiometer having the potential gradient of `2 mV//cm` is used to measure the difference of potential across a resistance of `10 ohm`. If a lengt
Last Answer : A potentiometer having the potential gradient of `2 mV//cm` is used to measure the difference of potential across a ... `) A. 1 B. 2 C. 5 D. 10
Description : Find the resistance of a hollow cylindrical conductor of length 1.0m and inner and outer radii 1.0mm and 2.0mm respectively. The resistivity of the ma
Last Answer : Find the resistance of a hollow cylindrical conductor of length 1.0m and inner and outer radii 1.0mm and 2 ... the material is `2.0xx10^(-8)(Omega)m`.
Description : The resistance of a conductor is inversely proportional to its - (1) temperature (2) resistivity (3) area of cross section (4) length
Last Answer : (3) area of cross section Explanation: The resistance of a current carrying conductor is inversely proportional to the area of cross section of the conductor. This is because the resistance occurs due to the collision of electrons/charged particles.
Description : What determines the velocity factor in a transmission line? A. The termination impedance B. The line length C. Dielectrics in the line D. The center conductor resistivity
Last Answer : C. Dielectrics in the line
Description : What determines the velocity factor in transmission line? A. The center conductor resistivity B. Dielectrics in the line C. The termination impedance D. The line length
Last Answer : B. Dielectrics in the line
Description : . By-products recovery process from coal carbonisation is termed asdirect, indirect and semi direct process depending upon the method of recovery of (A) Tar (B) Benzol (C) Ammonia (D) None of these
Last Answer : (C) Ammonia
Description : Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as __________ oil. (A) Drying (B) Semi-drying (C) Non-drying (D) None of these
Last Answer : (C) Non-drying
Description : . __________ test can be termed as the semi-destructive test. (A) Impact (B) Torsion (C) Hardness (D) Charpy
Last Answer : Option C
Description : Heating of ferromagnetic materials to a temperature above Curie temperature makes it (A) Insulator for heat & electricity transmission (B) Ferritic (C) Behave like paramagnetic materials (D) Superconductor
Description : Flats belts are available in various widths ranging from a) 1.0 to 50 cm b) 1.5 to 50 cm c) 2 to 50 cm d) 2.5 to 50 cm
Last Answer : d) 2.5 to 50 cm
Description : ails are available in various lengths ranging from a ) 1.00 to 15 cm b) 1.25 to 15 cm c) 1.5 to 15 cm d) 2.5 to 15 cm
Last Answer : b) 1.25 to 15 cm
Description : Find the current in a conductor with resistance 2 ohm, electric field 2 units and distance 100cm. a) 1A b) 10mA c) 10A d) 100mA
Last Answer : a) 1A
Description : If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes?
Last Answer : If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes 0.4 ohm.
Description : Why are Metals good conductor of heat than insulator? -General Knowledge
Last Answer : The answer is 'They contain free electrons'
Last Answer : answer:
Description : Penny conductor or insulator?
Last Answer : Copper is a conductor, so and pennies are coated in copper.
Description : Is a coin a insulator or a conductor?
Last Answer : A very good conductor.
Description : Is Rubber insulator or conductor?
Last Answer : Rubber is an insulator.
Description : Is wood a conductor or a insulator?
Last Answer : Wood is a conductor, though not a very good one.
Description : Is styrofoam insulator or conductor?
Last Answer : Styrofoam is an insulator.
Description : Is copper insulator or conductor?
Last Answer : Conductor, which is why it's used for wires.
Description : Is plastic insulator or conductor?
Last Answer : Plastic is an insulator.
Description : In your own words explain the difference between a conductor and an insulator?
Last Answer : Need answer
Description : Is a brass paper fastener an insulator or conductor?
Last Answer : conductor
Description : Is a paper clip an insulator or an conductor?
Last Answer : Most paperclips are metal- conductor.
Description : Is a piece of fabric a conductor or insulator?
Last Answer : conducter
Description : Is straw a conductor or insulator?
Last Answer : Dry straw is an insulator.
Description : Is Velcro a conductor or insulator?
Last Answer : Insulator
Description : Is a dry chalkboard eraser an insulator or conductor?
Last Answer : A dry chalkboard eraser is an insulator.