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WorksheetsTransducers and Sensors Quiz
Total questions: 17
Worksheet time: 24mins
What is a transducer?
What is the difference between active and passive transducers?
What are the characteristics of sensors?
What are the types of temperature sensors available?
What is the principle of strain gauges?
What is the formula for the change in volume at constant pressure?
What is the coefficient of volume expansion for air at room temperature?
3.66×10–3 K–1
1.82×10–4 K–1
1.12×10–4 K–1
1.80×10–5 K–1
What problems does the fluid in glass thermometer suffer from?
Good thermal contact is difficult to achieve.
Difficult to connect to a computer.
A meniscus forms at the top of the fluid.
Tapping the thermometer is necessary.
Volume expansion of glass exhibits hysteresis.
What is the formula for resistivity in a thermoresistive sensor?
ρ = ρ0(1 + α(T – T0))
R = R0(1 + α(T – T0))
ρ = R0(1 + α(T – T0))
R = ρ0(1 + α(T – T0))
What is the standard device for the International Practical Temperature Scale?
Thermocouple
Platinum resistance thermometer
Fluid in glass thermometer
Thermistor
What is the Seebeck effect?
A voltage difference created by electron density.
A method to measure temperature.
A type of thermocouple.
A property of metals.
What are the common types of thermocouples?
Type E
Type J
Type K
Type S
Type T
What is the accuracy and resolution of thermocouples?
0.1 K and 0.001 K
1 K and 0.01 K
0.5 K and 0.005 K
0.2 K and 0.002 K
What is a thermistor?
A semiconductor resistive temperature sensor.
A type of thermometer.
A device for measuring radiation.
A type of thermocouple.
What is the formula for the resistance of a thermistor?
R = R0 exp(β/T)
R = R0(1 + α(T – T0))
R = ρ0(1 + α(T – T0))
R = ρ exp(α/T)
What does a radiation thermometer measure?
Thermal radiation emitted from an object.
Temperature of an object.
Pressure of an object.
Humidity of an object.
What is Planck's black body radiation formula?
W = εP(Ts) + (1 – ε)P(Ta)
W = P(T) / (λ^2)
W = C1 * λ^(-5) * (e^(C2/λT) - 1)
W = ε * T^4
