Question: The purpose of d.c. conditions in a transistor is to___________________?

• 1. Reverse bias the emitter
• 2. Forward bias the collector
• 3. Set up operating point
• 4. None of the above

Question: In the a.c. equivalent circuit of a transistor amplifier, the capacitors are considered ___________________?

• 1. Short
• 2. Open
• 3. Partially open
• 4. None of the above

Question: If RC and RL represent the collector resistance and load resistance respectively in a single stage transistor amplifier, then a.c. load is____________________?

• 1. RL + RC
• 2. RC || RL
• 3. RL – RC
• 4. RC

Question: The purpose of capacitors in a transistor amplifier is to___________________?

• 1. Protect the transistor
• 2. Cool the transistor
• 3. Couple or bypass a.c. component
• 4. Provide biasing

Question: In a CE amplifier, voltage gain =____________________ x RAC/Rin?

• 1. α
• 2. (1 + α)
• 3. (1+ β)
• 4. β

Question: If the power and current gains of a transistor amplifier are 16500 and 100 respectively, then voltage gain is_____________________?

• 1. 165
• 2. 165 x 104
• 3. 100
• 4. None of the above

Question: In a CE amplifier, the phase difference between voltage across collector load RC and signal voltage is _________________?

• 1. 180o
• 2. 270o
• 3. 90o
• 4. 0o

Question: In a single stage transistor amplifier, RC and RL represent collector resistance and load resistance respectively. The transistor sees a d.c. load of _____________________?

• 1. RC + RL
• 2. RC || RL
• 3. RL
• 4. RC

Question: When a transistor amplifier is operating, the current in any branch is _______________?

• 1. Sum of a.c. and d.c.
• 2. c. only
• 3. c. only
• 4. difference of a.c. and d.c.

Question: The phase difference between the output and input voltages of a CE amplifier is _____________?

• 1. 180o
• 2. 0o
• 3. 90o
• 4. 270o