Thermistor Questions:
1. In a positive temperature coefficient thermistor, a
temperature increase causes what change in the resistance?
a) Increase
b) Decrease
c) Remain the same
d) Insufficient information given
2. Which of the following would not be a possible application
for a thermistor?
a) Electronic thermometer
b) Fire detection and warning system
c) Fuse
d) Temperature compensation for PTC components
Thermistor Questions: 1. In a positive temperature coefficient thermistor, a temperature increase causes what change in...
7. An increase in the temperature of the reactants causes an increase in the rate of reaction. The best explanation for this behavior is that as the temperature increases, a. the fraction of collisions with total kinetic energy greater than Ea increases. b. the concentration of reactants increases. c. the activation energy remains the same. d. the collision frequency decrease
1) The parathyroid hormone causes what change in bone in order to increase calcium in the blood? A increases catabolism of the bone B decreases catabolism of the bone C causes bones to break more easily D causes the increase of mineralization of bone tissue
The change in boiling temperature of water in a partial vacuum is due to A) increase in atmospheric pressure B) decrease in vapor pressure C) sonic anomalies D) increase in vapor pressure E) decrease in atmospheric pressure
using matlab to find steps 1-10 Calibration and sensing Consider a thermistor temperature sensor (Fig. 1) with a pull-up resistor R1 connected to a 10-bit analog-to-digital (ADC) converter (a full scale No-210-1=1023 counts corresponding to the reference voltage Vref). The thermistor is used to measure temperature in the total input span from -10°C to 110°C. knots n(t VO R1 A/D GND Temperature Fig. 1 The output count of the thermistor measurements circuit can be modeled by a nonlinear function of...
The temperature coefficient of resistance α in equation R(T)=R0[1+α(T−T0)] equals the temperature coefficient of resistivity α in equation ρ(T)=ρ0[1+α(T−T0)] only if the coefficient of thermal expansion is small. A cylindrical column of mercury is in a vertical glass tube. At 20 ∘C, the length of the mercury column is 12.0 cm. The diameter of the mercury column is 1.6 mm and doesn't change with temperature because glass has a small coefficient of thermal expansion. The coefficient of volume expansion of...
A) If 24.67 grams of water showed a temperature increase of 0.85 °C, what is the heat change for the water in joules? The specific heat capacity of water is 4.184 J/(g⋅°C). B What is the heat change by the metal in Part A in joules? C) If the hot metal in Part A has a mass of 5.57 grams, and the metal underwent a temperature decrease of 18.18 °C, what is the specific heat capacity of the metal object?
What reagent (or compound) causes the observed visual change in a positive Lucas test? A. Cr(VI) is reduced to Cr(ll) B. The alkyl halide product is insoluble in water C. The product hydrazone is insoluble. D. Ag() is reduced to Ag(0) What reagent (or compound) causes the observed visual change in a positive Lucas test? A. Cr(VI) is reduced to Cr(ll) B. The alkyl halide product is insoluble in water C. The product hydrazone is insoluble. D. Ag() is reduced...
Atmospheric scientists anticipate a 1.1–6.4°C temperature increase by the end of the twenty-first century. What impacts would this change bring? A. Some plant and animal species will migrate to cooler locations, whereas others will become extinct. B. Increases in ocean evaporation and terrestrial rainfall will have a positive impact on the world’s agricultural systems. C. The frequency of severe weather will decrease. D. The polar ice caps will increase in size.
1. A negative moderator reactivity coefficient produces what result when coolant temperature decreases? a) Addition of negative reactivity b) Addition of positive reactivity c) No change in reactivity d) None of the above 235 are a) Isotones b) Isotopes c) Isobars d) Isomers temperature coefficient of reactivity is preferred in a reactor design because it means that a) b) c) d) Negative; the reactor won't enter a positive feedback loop Negative; the neutrons are better thermalized at higher temperatures Positive;...
20. From Diagram 1, a change from Point A to Point D represents a(n): increase in supply A) supply decrease in B) increase in quantity supplied C) decrease in quantity supplied. D) 21. Which of the following could have caused a decrease in the price of milk? The opening of more dairy farms A) B An increase in new born babies An increase in the wages of farm workers. C) D) A decrease in the number of people willing to...