A thermistor has

A Positive temperature coefficient
B Negative temperature coefficient
C Zero temperature coefficient
D Variable temperature coefficient

Correct Answer: Positive temperature coefficient

Positive temperature coefficient: This is the correct answer. A thermistor with a positive temperature coefficient (PTC) exhibits an increase in resistance with an increase in temperature. The resistance-temperature relationship is positive for PTC thermistors.
Negative temperature coefficient: This is not the correct answer. A thermistor with a negative temperature coefficient (NTC) exhibits a decrease in resistance with an increase in temperature. The resistance-temperature relationship is negative for NTC thermistors.
Zero temperature coefficient: This is not the correct answer. A zero temperature coefficient would mean that the resistance does not change with temperature, which is not a characteristic of thermistors.
Variable temperature coefficient: This is not the correct answer. Thermistors typically have a well-defined temperature coefficient, either positive or negative, and are not variable in this aspect.
Therefore, in the context of the question, a thermistor has a Positive temperature coefficient.
Bissoy MCQ
#Electrical Engineering #Current Electricity

Related Questions

Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an
A Insulator
B Conductor
C Solid semi-conductor
D Liquid semi-conductor
A thermistor is a
A Thermocouple
B Thermometer
C Miniature resistance
D Heat sensitive explosive
A thermistor is a type of
A Switch
B Resistor
C Battery
D Power supply
A thermistor:
A is a pressure sensing device
B has a voltage output
C measures temperature
D All of the above
E None of the above
If Marie has twice as much money as Curie has, who has three times as much money as Sunny as has, what is the ratio of the amount of money Sunny has to the amount of money Marie has ?
A 1 : 8
B 1 : 6
C 1 : 4
D 1 : 2
Masud has twice as much money as Selim has and Selim has 50% more money than what Bashir has. If the average money with them is Tk. 110, then Masud has :
A 55
B 60
C 90
D 180
Nurse Kemp has worked more night shifts in a row than Nurse Rogers, who has worked five. Nurse Miller has worked fifteen night shifts in a row, more than Nurses Kemp and Rogers combined. Nurse Calvin has worked eight night shifts in a row, less than Nurse Kemp. How many night shifts in a row has Nurse Kemp worked?
A eight
B nine
C ten
D eleven
Robin has 4 times as many marbles as Azad has and 5 times as many as Kalam has. If Kalam has more than 40 marbles, what is the least number of marbles Robin could have?
A 200
B 205
C 210
D 220
In a family, each daughter has the same number of brothers as she has sisters and each son has twice as many sisters as he has brothers. How many sons there in the family?
A 2
B 3
C 4
D 5
Mina has 3 Taka more than Babu has, but 5 Taka less then shelly has. If Mina has x Taka, how much money Shelly and Babu have altogether?
A 2x-8
B 2x-5
C 2x-2
D 2x+2

Next steps