The resistance temperature coefficient is defined as the ratio of increase in resistance per degree centigrade to the resistance at 0oC.
Description : Problem on temperature coefficient of resistance 3
Last Answer : Problem on temperature coefficient of resistance 3
Description : Problem on temperature coefficient of resistance 2
Last Answer : Problem on temperature coefficient of resistance 2
Description : Problem on temperature coefficient of resistance 1
Last Answer : Problem on temperature coefficient of resistance 1
Description : A semiconductor device made out of a material having very high temperature coefficient of resistance is
Last Answer : A semiconductor device made out of a material having very high temperature coefficient of resistance is Thermistor
Last Answer : A metal resistor has resistance of 10 ohm at 0°C and 11 ohms at 160°C, the temperature coefficient is 0.000625 /°C.
Description : what is the temperature coefficient of Resistance of conductor ?
Last Answer : conductors have positive coefficient. means as the temperature increases resistance also increases.
Description : what is the temperature coefficient of Resistance of semiconductor ?
Last Answer : semiconductors have negative temperature coefficient of resistance. means as the temperature increases resistance decreases.
Description : What is defined as the ratio of the change in temperature to the change in pressure when a real gas is throttled? A. Rankine coefficient B. Kelvin coefficient C. Maxwell-Boltzmann coefficient D. Joule-Thomson coefficient
Last Answer : Joule-Thomson coefficient
Description : The temperature coefficient of copper is `0.004^(@)C^(-1)`. Find the resistance of a 5 m long copper wire of diameter 0.2 mm at `100^(@)C`, if the res
Last Answer : The temperature coefficient of copper is `0.004^(@)C^(-1)`. Find the resistance of a 5 m long copper wire of ... `0^(@)C` is `1.7xx10^(-8) Omega` m.
Description : The temperature coefficient of a resistance wire is `0.00 12.5^(@)C^(-1)`. At 300 K, its resistance is `1 Omega`. At what temperature the resistance o
Last Answer : The temperature coefficient of a resistance wire is `0.00 12.5^(@)C^(-1)`. At 300 K, its ... the resistance of the wire will be `2 Omega` ?
Description : The temperature coefficient of resistance of the material of a wire is `0.00125^(@)C^(-1)`. Its resistance at `27^(@)C` is `1 Omega`. At what temperat
Last Answer : The temperature coefficient of resistance of the material of a wire is `0.00125^(@)C^(-1)`. Its resistance at ... K B. 1100 K C. 1400 K D. 1127 K
Description : The temperature coefficient of resistance of an alloy used for making resistor is
Last Answer : The temperature coefficient of resistance of an alloy used for making resistor is A. small and ... C. large and positive D. large and negative
Description : The resistance of a bulb filmanet is `100Omega` at a temperature of `100^@C`. If its temperature coefficient of resistance be 0.005 per `.^@C`, its re
Last Answer : The resistance of a bulb filmanet is `100Omega` at a temperature of `100^@C`. If its temperature coefficient of ... . `200^(@)C` D. `400^(@)C`
Description : The existing resistance of a conductor is dependent upon its length, cross-sectional area, _____________. A. temperature and insulation B. material and insulation C. resistive coefficient and material D. material and temperature
Last Answer : Answer: D
Description : When temperature rises, resistance of negative temperature coefficient thermistor A. increases B. decreases C. zero D. infinity
Last Answer : decreases
Description : Which temperature coefficient indicates a material whose resistance increases as temperature increases?
Last Answer : Positive.
Description : Define the temperature coefficient of resistance.
Last Answer : The amount of increase in the resistance of a 1-ohm sample of the conductor per degree of temperature rise above 0º C
Description : The fractional change in resistance per kelvin is known as, a. temperature coefficient of resistance b. coefficient of Voltage of charge c. thermal expansion d. all of above
Last Answer : a. temperature coefficient of resistance
Description : Semi-conductors have ________ temperature coefficient of resistance. (A) Negative (B) Positive (C) Both positive and negative (D) None of the above
Last Answer : (A) Negative
Description : Which amongst the following has a negative coefficient of temperature for resistance? a) Copper b) Lead c) Carbon d) Aluminium
Last Answer : Which amongst the following has a negative coefficient of temperature for resistance? Carbon
Last Answer : A semiconductor has Negative temperature coefficient of resistance.
Description : The metal having the lowest temperature coefficient of resistance is
Last Answer : The metal having the lowest temperature coefficient of resistance is gold.
Description : Mass transfer co-efficient is defined as (A) Flux = Co-efficient/concentration difference (B) Co-efficient = Flux/concentration difference (C) Flux=concentration difference/coefficient (D) None of these
Last Answer : (B) Co-efficient = Flux/concentration difference
Description : The coefficient of curvature is defined (A) D60/D10 (B) D10/D60 (C) D30 ²/D60 D10 (D) D10 ²/ D30 D60
Last Answer : (C) D30 ²/D60 D10
Description : Coefficient of velocity is defined as the ratio of (A) Actual velocity of jet at vena contracta to the theoretical velocity (B) Area of jet at vena contracta to the area of orifice (C) Actual discharge through an orifice to the theoretical discharge (D) None of the above
Last Answer : Answer: Option A
Description : Compare RTD and thermistor on the basis of temperature coefficient , linearity, temperature range and cost.
Last Answer : Parameters RTD Thermistors Temperature coefficient It has positive temperature Coefficient (PTC) of Resistance. It has both positive and negative temperature Coefficient (PTC and NTC) of Resistance. ... -270oC to 2800oC -150oC to 300oC Cost High cost Low cost
Description : Which of the following has nearly zero temperature coefficient? A) Constantan B) Manganin C) Both A and B D) None of these
Last Answer : Which of the following has nearly zero temperature coefficient? A) Constantan B) Manganin C) Both A and B D) None of these
Description : Which of the following has negative temperature coefficient? A. Brass B. Mercury C. Electrolytes D. Silver.
Last Answer : Electrolytes has negative temperature coefficient.
Description : What is the heat coefficient of resistance ?
Last Answer : Answer : The coefficient of heat is the amount of radh that increases with the increase in temperature per ohm of radh.
Description : A plantinum wire has resistance of `10 Omega` at `0^(@)C` and `20 Omega` at `273^(@)C`. Find the value of coefficient of resistance.
Last Answer : A plantinum wire has resistance of `10 Omega` at `0^(@)C` and `20 Omega` at `273^(@)C`. Find the value of coefficient of resistance.
Description : Determine the viscous damping coefficient if damper offers resistance 0.05N at constant velocity 0.04m/sec A 0.8N-sec/m B 1.5N-sec/m C 2.5N-sec/m D 1.25N-sec/m
Last Answer : D 1.25N-sec/m
Description : Coefficient of resistance is the ratio of (A) Actual velocity of jet at vena-contracta to the theoretical velocity (B) Area of jet at vena-contracta to the area of orifice (C) Loss ... available at the exit of the orifice (D) Actual discharge through an orifice to the theoretical discharge
Last Answer : Answer: Option C
Description : Coefficient of discharge Cd is equal to (where Cc = Coefficient of contraction, Cv = Coefficient of velocity, and Cr = Coefficient of resistance) (A) Cc × Cv (B) Cc × Cr (C) Cv × Cr (D) Cc /Cr
Description : In a braking test, a vehicle travelling at 36 km ph was stopped at a braking distance of 8.0 m. The average value of the vehicle's skid resistance (friction coefficient) is (A) 0.64 (B) 6.25 (C) 0.16 (D) None of these
Description : Manganese steels (A) Are non-magnetic (B) Possess high electrical resistance (C) Possess low coefficient of expansion (D) All the above
Last Answer : Answer: Option D
Description : Heat flux, as defined in heat flow is analogous to __________ in electricity flow. (A) Current (B) Voltage (C) Resistance (D) None of these
Last Answer : (A) Current
Description : A infinite resistance is considered as a/an a) Closed path(short circuit) b) Open path c) Not defined d) Ammeter with zero reading
Last Answer : b) Open path
Description : Multidrug resistant (MDR) tuberculosis is defined as resistance to: A. Any two or more antitubercular drugs B. Isoniazid + any other antitubercular drug C. Isoniazid + Rifampin + any one or more antitubercular drugs D. All five first line antitubercular drugs
Last Answer : C. Isoniazid + Rifampin + any one or more antitubercular drugs
Description : International ohm is defined in terms of the resistance of?
Last Answer : International ohm is defined in terms of the resistance of a column of mercury.
Description : If temperature rises, what will be the coefficient of viscosity of liquid? -Do You Know?
Last Answer : As temperature increases, coefficient of viscosity decreases.
Description : Above the inversion temperature, `mu` (J.T. coefficient)
Last Answer : Above the inversion temperature, `mu` (J.T. coefficient) A. Is positive B. Is zero C. Is negative D. Depends on the gas
Description : A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of- 23°C. TheCarnot coefficient of performance of cycle will be (a) 0.2 (b) 1.2 (c) 5 (d) 6
Last Answer : Ans: c
Description : When hot liquid is poured into a thick glass tumbler, it cracks because glass – (1) is a bad conductor of heat so only inner surface expands (2) has high temperature coefficient of expansion (3) has a very low specific heat (4) has low temperature coefficient of expansion
Last Answer : (1) is a bad conductor of heat so only inner surface expands Explanation: When hot liquid is poured into a thick glass tumbler, it cracks because glass is a bad conductor of heat so only inner surface expands.
Description : If temperature rises, what will be the coefficient of viscosity of liquid?
Last Answer : Decreases
Description : What is the temperature coefficient of insulating materials?
Last Answer : Insulators are negative temperature coefficient materials.
Description : For the same heat load and mass flow rate in the tube side of a shell and tube heat exchanger, one may use multipass on the tube side, because it (A) Decreases the pressure drop (B) ... the outlet temperature of cooling medium (C) Increases the overall heat transfer coefficient (D) None of these
Last Answer : (C) Increases the overall heat transfer coefficient
Description : Due to a rise in temperature, the viscosity and the unit weight of the percolating fluid are reduced to 60% and 90% respectively. If other things remain constant, the coefficient of permeability (A) Increases by 25 % (B) Increases by 50 % (C) Increases by 33.3 % (D) Decreases by 33.3 %
Last Answer : (B) Increases by 50 %
Description : Coefficient of permeability of soil (A) Does not depend upon temperature (B) Increases with the increase in temperature (C) Increases with the decrease in temperature (D) None of the above
Last Answer : Answer: Option B
Description : The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to (A) 2100 (B) 2700 (C) 10,000 (D) 21,000
Description : Define the term negative temperature coefficient.
Last Answer : It is the decrease in a semiconductor’s resistance as temperature rises.