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Linear Integrated Circuits
Linear Integrated Circuits Basic
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Q.1
The temperature of a thermistor increases, when the value of its resistance
a) Remain constant
b) Increase
c) Decrease
d) Depends on the heating material
Q.2
a) 4.95v
b) 1.65v
c) 8.25v
d) 14.85v
Q.3
Consider a thermistor having the following specifications: RF=150kΩ at a reference temperature of 35oC and temperature coefficient of resistance = 25oC. Determine the change in resistance at 100oC.
a) -1.625MΩ
b) 9.75MΩ
c) 4.78MΩ
d) None of the mentioned
Q.4
Consider the given bridge circuit, find the voltage across the output terminal, Vab.
a) Vab = 4.9v
b) Vab = -5.6v
c) Vab =1.2v
d) Vab =-8.2v
Q.5
Express the equation for transducer bridge, if all the resistor values are equal
a) v=-(△R×Vdc)/(2×R+△R)
b) v=-(△R×Vdc)/2×(R+△R)
c) v=-Vdc/[2×(2×R+△R)].
d) v=-(△R×Vdc)/ [2×(2×R+△R)].
Q.6
Which type of thermistor is chosen for temperature measurement and control?
a) High temperature coefficient of resistance
b) Low temperature coefficient of resistance
c) Positive temperature coefficient of resistance
d) None of the mentioned
Q.7
Photo conductive cell changes it resistance with
a) Change in temperature
b) Material composition
c) Incident radiant energy
d) Change in elasticity
Q.8
What will be the resistance of a photoconductive cell in darkness?
a) 1000-3000Ω
b) 100MΩ
c) 250-500Ω
d) None of the mentioned
Q.9
Which material is used for photoconductive cells?
a) Germanium
b) Cadmium sulphide
c) Lithium
d) Phosphorous
Q.10
Name the resistive transducer that varies its resistance on application of external stress?
a) Photocells
b) Light dependent
c) Stain gage
d) None of the mentioned
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