An air pollutant that causes eye and throat irritation, and coughing is
a. SO2
b. NO2
c. O3
d. all of the above e. none of the above
d
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A voltmeter has high resistance connected ____ the meter movement.
a. alternatively to b. in parallel with c. indirectly to d. in series with
Which of the following is an analog input device?
a. Pressure switch b. Thermistor c. Transducer d. Actuator
A driver fills her tank and notes the odometer reading of 63,219 miles. Later, the driver pumps 13 gallons of gas into her tank so that it is full again. The odometer now displays 63,531 miles. What is this vehicle's average fuel economy?
A) 42 MPG B) 22 MPG C) 24 MPG D) 40 MPG
Answer the following statement(s) true (T) or false (F)
1. If the sun is to be used as a timer, some type of photodetector will be required to sense when the sun rises and sets. 2. When the cad cell is in the presence of light, its resistance is high. 3. In the presence of darkness, the resistance of the cad cell increases in value. 4. When the voltage applied to the inverting input becomes higher than the voltage applied to the noninverting input, the output changes to a high state. 5. A DC motor contains brushes and a commutator.