DC load line

What is the typical value of V_BE for a silicon transistor in active region when used in a common emitter (CE) configuration?

• 2.6

• 0.4

• 0.7

• 0

A collector characteristic curve is a graph showing for CE configuration is:

• emitter current (I_E) versus collector-emitter voltage (V_CE) with (V_BB) base bias voltage held constant

• collector current (I_C) versus collector-emitter voltage (V_CE) with (V_BB) base bias voltage held constant

• collector current (I_C) versus collector-emitter voltage (V_C) with (V_BB) base bias voltage held constant

• collector current (I_C) versus collector-emitter voltage (V_CC) with (V_BB) base bias voltage held constant

A decrease in base current of a C-E amplifier causes the voltage measured between the emitter and the collector to increase.

• true

• false

A transistor has a of current gain of 250 and a base current, I_B, of 20 micro A. The collector current, I_C, equals:

• 500 micro A

• 5 mA

• 50mA

• 5 A

If a transistor operates at the middle of the dc load line, a decrease in the current gain will move the Q point:

• off the load line

• nowhere

• up

• down