5.3 A temperature measuring system (assumed to be a first-order system) is excited by a
0.25 Hz harmonically varying input. If the time constant of the system is 4.0 s and
the indicated amplitude is 1
4.13 A 500 Hz sine wave is sampled at a frequency of 4096 Hz. A total of 2048 points
are taken.
a. What is the Nyquist frequency?
f
4096
f Nyq = s =
= 2048 Hz
2
2
b. What is the frequency resolution?
3.2
From long-term plant-maintenance data, it is observed that pressure downstream
from a boiler in normal operation has a mean value of 303 psi with a standard
deviation of 33 psi. What is the probab
int firstsens = 3; /Set sensor 1 equal to analog pin
int secondsens = 4; /Set sensor 2 equal to analog pin
int thirdsens = 5; /Set sensor 3 equal to analog pin
unsigned long time, time2, time3; /Set v
16.8 Ther circuit shown in Fig. 16.6(a) is used with a platinum resistance thermometer
having a resistance of 1200 at 200C. Also RAB = RBC =8000 and RDC = 6800 .
Using the data for platinum listed in
7.10 Consider the voltage-sensitive bridge shown in Fig. 7.10. If a thermistor whose
resistance is governed by Eq. (16.3) is placed in leg 1 of the bridge while R2 = R3 = R4 =
R0, determine the bridge
Homework #2
3.7, and
The power usage of a DC strip heater can be determined in either of two ways: (1) heater
resistance and voltage drop can be measured simultaneously and power computed, or (2)
heat
3.2
From long-term plant-maintenance data, it is observed that pressure downstream
from a boiler in normal operation has a mean value of 303 psi with a standard
deviation of 33 psi. What is the probab
int firstsens = 3;
int secondsens = 4;
int thirdsens = 5;
int val;
int val2;
int val3;
void setup()
cfw_
Serial.begin(9600);
pinMode (firstsens, INPUT);
pinMode (secondsens, INPUT);
pinMode (thirdsens