In a 555 timer, pin #____ must be connected to a voltage which is less than one-third Vcc (the applied voltage) to trigger the unit.

a. 1
b. 2
c. 3
d. 4


b. 2

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In which of the following gear combinations is bottoming a potential problem?

A. two-gear drive combinations B. multiple-gear drive combinations C. both A and B D. neither A nor B

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If a 47 ?F capacitor is connected to a 20 V, 400 Hz source, the current is ________

A) 425 A B) 0.851 A C) 8.51 A D) 2.36 A

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What is the applied voltage of a circuit that has 10 amps of current and 12 ohms of resistance?