Question: The maximum collector efficiency of class B operation is ________________?

• 1. 50%
• 2. 90%
• 3. 5%
• 4. 5%

Question: If a transistor is operated in such a way that output current flows for 60o of the input signal, then it is ______________ operation?

• 1. Class A
• 2. Class B
• 3. Class C
• 4. None of the above

Question: A class A power amplifier is sometimes called______________amplifier?

• 1. Symmetrical
• 2. Single-ended
• 3. Reciprocating
• 4. Differential

Question: A 2-transistor class B power amplifier is commonly called ______________ amplifier?

• 1. Dual
• 2. Push-pull
• 3. Symmetrical
• 4. Differential

Question: A power amplifier has comparatively __________________ ß ?

• 1. Small
• 2. Large
• 3. Very large
• 4. None of the above

Question: Low efficiency of a power amplifier results in_________________?

• 1. Low forward bias
• 2. Less battery consumption
• 3. More battery consumption
• 4. None of the above

Question: When a transistor is cut off _________________?

• 1. Maximum voltage appears across transistor
• 2. Maximum current flows
• 3. Maximum voltage appears across load
• 4. None of the above

Question: If the zero signal dissipation of a transistor is 1W, then power rating of the transistor should be at least___________________?

• 1. 5 W
• 2. 33 W
• 3. 75 W
• 4. 1 W

Question: The output stage of a multistage amplifier usually employs______________?

• 1. Push-pull amplifier
• 2. Preamplifier
• 3. Class A power amplifier
• 4. None of the above

Question: The size of a power transistor is made considerably large to________________?

• 1. Provide easy handling
• 2. Dissipate heat
• 3. Facilitate connections
• 4. None of the above