At its most basic, a control requires:
A) A voltage source, a path, and a load. B) A sensor, an actuator, and a linkage.
C) A thermostat and a motor. D) A transformer, a relay, and a motor.
B
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Even the best plan can do no good until it is effectively executed.
One advantage of digital meters is:
A) They do not require batteries like analog meters do. B) They are preferable for fluctuating readings. C) They cannot be damaged by improper use. D) There is no need to interpret the scale.
In the float switch circuit, what happens when motor starter M1 de-energizes?
A. The pump motor starts. B. The water level rises. C. Relay coil FSCR energizes. D. The pump motor stops.
Use the accompanying figure. The mechanic receives 55% of the labor charge. How much is received for this job?
A. $44 B. $55 C. $66 D. $77