Deck 32: The Pulse Timer

Question 1

In the accompanying figure, transistor ____ is connected in series with K1, which is the coil of a 12- volt DC relay.

A) Q1
B) Q3
C) C1
D) C3

Answer 1

B

Question 2

Electrons are ____ particles.

A) negative
B) positive
C) neutral
D) limiting

Answer 2

A

Question 3

The windshield wiper delay circuit on many automobiles is a good example of the on-delay type of  circuit.

Answer 3

False

Question 4

The pulse timer and the on-delay timer have the same functionality and construction.

Question 5

In a simple pulse-timer circuit, a ____ is most commonly used to provide a pulse.

A) junction transistor
B) triac
C) capacitor
D) unijunction transistor

Question 6

When the on-delay timer is turned on, it remains that way until the power is interrupted.

Question 7

The pulse timer turns itself back off after it has been turned on.

Question 8

A ____ transistor steals the base current from another transistor to keep it turned off.

A) sink
B) drain
C) stealer
D) vampire

Question 9

In the accompanying figure, the time between pulses is determined by the RC time constant of ____  and C1.

A) R1 - R2
B) R1 + R2
C) R1 X R2
D) R1 / R2

Question 10

In a simple pulse-timer circuit, electrons flow from ground through the base-emitter junction to the  capacitor.