The minimum current required to actuate a device is called the ____ current, and is determined by the applied voltage.

a. pull-out
b. pull-in
c. drop-out
d. drop-in


b. pull-in

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Sound is transmitted by __________ in any material: solid, liquid, or gas.

A. waves B. vibrations C. noise D. energy

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Technician A says that a hoist can be stopped at any level as long as the safety latch engages. Technician B says that the vehicle should be hoisted to the top of the hoist travel for safety. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B

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The electrical terminals used for airbag systems are unique because they are plated with which of these metals?

A) Tin plated heavy-gauge steel B) Solid copper C) Gold plated D) Silver plated

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Obtain the current i?(t) in the circuit in Fig. 18.44.

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