The NEC® article that lists the requirements for installing a service disconnect is _____.
a. NEC Article 110
b. NEC Article 210
c. NEC Article 220
d. NEC Article 230
d. NEC Article 230
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Pressure switch circuits are ____ type switches.
A. transducer B. simple on-off C. sensor D. actuator
In a certain experiment, cylindrical samples of diameter 4 cm and length 7 cm are used. The two thermocouples in each sample are placed 3 cm apart. After initial transients, the electric heater is observed to draw 0.6 A at 110 V, and both differential thermometers read a temperature difference of 10°C. Determine the thermal conductivity of the sample.
What will be an ideal response?
Timing gears are being discussed. Technician A says that worn timing gears can make noise. Technician B says that the clearance between the gears that is seen by rotating one gear back and forth without the other moving is called backlash. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Analog measurements that are based on two input voltages are called
A) differential. B) asymmetrical. C) asynchronous. D) dual input.