Which of these electromagnetic devices is used to control high amperage circuits (50 amps or more)?
A) Ammeter B) Solenoid C) Spark plug D) Relay
B
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El objetivo de usar un megóhmetro (Megger) es:
a. medir valores de resistencia bajos. b. medir voltaje. c. verificar la continuidad del circuito. d. medir la resistencia del aislamiento.
From a starting point, a vehicle travels 53.8 miles in a direction 24.6º east of north and then travels 49.3 miles due north. Determine the change in position (displacement) in standard position from start to finish. Round the magnitude to 3 significant digits and the angle to the nearest tenth degree.
Fill in the blank(s) with the appropriate word(s).
The average EPD for a population of animals is approximately:
a. 250 c. 21 b. 100 d. 0
The parallel combination of a 330 ? resistor and a 470 ? resistor is connected in series with the parallel combination of four 1 k? resistors. If a 100 V source is connected across the circuit, then which resistor carries the most current?
A) 470 ? B) 330 ? C) 1 k?