A 1. Maximum power is delivered from a source of power to a load when the a. load current is equal to the power source current b. impedance of the load is equal to the output impedance of the powes source c. output impedance of the power source is high compared to the impedance of the load d. output impedance of the power source is low compared to the impedance of the load 2. The emitter follower is a (an). a. impedance matching device b. high gain voltage amplifier c. phase inverter d. combination power and voltage amplifier 3. The emitter follower uses a. no collector resistor. b. a forward bias collector-base junction c. negative feedback (degeneration) d. an NPN transistor only

2. Differentiate between forward biasing and reverse biasing of PN Junction.

Electronics for electricians explain the relationship between Base-emitter current and Collect-emitter current.

choose the correct answer 1-The output voltage of an emitter follower isa-In phase with Vin . b-Much greater than Vin . c-180° out of phase.d-Generally much less than Vin .2-The ac emitter resistance of an emitter followera-Equal the dc emitter resistance .b-Is larger than the load resistance .c-Is β times smaller than the load resistance. d-Is usually less than the load resistance.3-A common-base amplifier can be used when a-Matching low to high impedance.b-A voltage gain without a current gain is required. c-A high- frequency amplifier is needed.d-All of the above.

(a) What is the output current IO in the circuitshown if −VEE = −10 V andR = 20 ohm? Assume that the MOSFET is saturated.(b) What is the minimum voltage VDDneeded to saturate the MOSFET if VTN = 2.5 Vand K'n = 0.25 A/V2. (c) What must be the powerdissipation ratings of resistor R and the FET.

Determine thel 1.V B, c and V for the transistor circuit in Figure. Rc 430 Q Rg Vcc A) Poc = 50 24 V 4.7 ko VBB 2 V

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What is the difference between common emitter and common base?

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