ATT UPDATED EXAM QUESTIONS AND
CORRECT ANSWERS
●● What is the purpose of a diode limiting circuit?
Answer: To limit amplitude of the input.
●● What do clampers do?
Answer: Add DC to AC signal.
●● A transistor in a Common Emitter transfers an internal resistance
from a low resistance in emitter base to?
Answer: High resistance in collector base.
●● Ie (Emitter current) = ?
Answer: Ib (base current) + Ic (collector current)
●● When does cutoff occur in a Common Emitter?
Answer: When Emitter PN junction is reversed.
●● A Common Emitter has a gain of how much?
Answer: 10
, ●● How does a Common Emitter affect the phase of an input signal?
Answer: It inverts the input 180° (flip)
●● A Common Collector has a gain of how much?
Answer: 1 (no phase inversion)
●● A Common Base has a gain of how much?
Answer: 10 (no phase inversion)
●● How do transistor amplifiers operate?
Answer: By an AC input signal changing base bias.
●● The component that develops bias for a transistor part is directly
connected to the_________.
Answer: Corresponding transistor part.
●● In a Common Emitter, if base voltage (base bias) increases, emitter
current does what?
Answer: Increases.
●● A small input controls a__________.
Answer: Large output
CORRECT ANSWERS
●● What is the purpose of a diode limiting circuit?
Answer: To limit amplitude of the input.
●● What do clampers do?
Answer: Add DC to AC signal.
●● A transistor in a Common Emitter transfers an internal resistance
from a low resistance in emitter base to?
Answer: High resistance in collector base.
●● Ie (Emitter current) = ?
Answer: Ib (base current) + Ic (collector current)
●● When does cutoff occur in a Common Emitter?
Answer: When Emitter PN junction is reversed.
●● A Common Emitter has a gain of how much?
Answer: 10
, ●● How does a Common Emitter affect the phase of an input signal?
Answer: It inverts the input 180° (flip)
●● A Common Collector has a gain of how much?
Answer: 1 (no phase inversion)
●● A Common Base has a gain of how much?
Answer: 10 (no phase inversion)
●● How do transistor amplifiers operate?
Answer: By an AC input signal changing base bias.
●● The component that develops bias for a transistor part is directly
connected to the_________.
Answer: Corresponding transistor part.
●● In a Common Emitter, if base voltage (base bias) increases, emitter
current does what?
Answer: Increases.
●● A small input controls a__________.
Answer: Large output
