The unit of conductivity is: mho / metre.
Description : When the temperature of a doped semiconductor is increased, its conductivity (1) Decreases (2) Increases (3) Does not change (4) Increases or decreases depending on whether it is p-type or n-type
Last Answer : When the temperature of a doped semiconductor is increased, its conductivity Increases.
Description : Pa (Pascal) is the unit for (a) Thrust (b) Pressure (c) Frequency (d) Conductivity
Last Answer : Ans:(b)
Description : What is the unit of electrical conductivity?
Last Answer : Mho
Description : Pick out the wrong statement. (A) Reciprocal of the resistance to heat flow is called thermal conductance (B) Unit of thermal conductance is W/°K (C) Thermal conductance of a wall of thickness 'L', thermal conductivity 'k' and heat flow area 'A' is kL/A (D) None of these
Last Answer : (C) Thermal conductance of a wall of thickness 'L', thermal conductivity 'k' and heat flow area 'A' is kL/A
Description : Heat transfer rate per unit area is called (A) Thermal conductivity (B) Heat flux (C) Heat transfer co-efficient (D) Thermal diffusivity
Last Answer : (B) Heat flux
Description : What is the unit of thermal conductivity? (A) Kcal/hr. m2 °C (B) Kcal/hr.m.°C (C) Kcal/hr.m (D) Kcal/hr. °C
Last Answer : (B) Kcal/hr.m.°C
Description : Thermal diffusivity of a material (A) Has the unit m2 /sec (B) Is defined as K/ρ . Cp (C) Is the ratio of thermal conductivity to thermal capacity (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : The conductivity of a material with current density 1 unit and electric field 200 μV is a) 2000 b) 3000 c) 4000 d) 5000
Last Answer : d) 5000
Description : What refers to the rate of thermal radiation emitter per unit area of a body? A. Thermal conductivity B. Absorptivity C. Emissivity D. Emissive power
Last Answer : Emissive power
Description : For aluminium, as compared to copper, all the following factors have higher values except (a) specific volume (6) electrical conductivity (c) co-efficient of linear expansion (d) resistance per unit length for same cross-section
Last Answer : (6) electrical conductivity
Description : Define electrical conductivity and write its unit.
Last Answer : Electrical conductivity: Electrical conductivity of an electrolyte solution is a measure of the ability of the solution to conduct electricity(electric current) Unit: ohm-1
Description : What is the SI unit of conductivity ?
Last Answer : The SI unit of conductivity Siemens/m.
Description : What does double integration of a unit step function lead to? A) A doublet B) A ramp C) An impulse D) A parabola
Last Answer : What does double integration of a unit step function lead to? A) A doublet B) A ramp C) An impulse D) A parabola
Description : The unit of ∇× H is: (1) Ampere (2) Ampere/meter (3) Ampere/meter 2 (4) Ampere-meter
Last Answer : The unit of ∇× H is: Ampere/meter2.
Last Answer : The unit of electric field strength E is Volts/metre, nt/coul, joules/coulmetre.