Question: Three identical amplifiers with each one having a voltage gain of 50,input resistance of 1KΩ & output resistance of 250 ,are cascaded.The open circuit voltage gain of combined amplifier is_________?

• 1. 49dB
• 2. 51dB
• 3. 98dB
• 4. 102dB

Question: The cascade amplifier is a multistage configuration of__________?

• 1. CC-CB .
• 2. CE-CB
• 3. CB-CC
• 4. CE-CC

Question: The encapsulation of transistor is necessary for__________?

• 1. preventing radio interference
• 2. preventing photo-emission effects
• 3. avoiding loss of free electrons
• 4. mechanical ruggedness

Question: In all base driver amplifiers__________?

• 1. ac collector voltage is 180° out of phase with ac base voltage
• 2. ac emitter voltage is 180° out of phase with ac base voltage
• 3. ac collector voltage is in phase with ac base voltage
• 4. none of the above

Question: The parameter hie stands for input impedance in _____________?

• 1. CB arrangement with output shorted
• 2. CC arrangement with output shorted
• 3. CE arrangement with output shorted
• 4. None of the above

Question: The values of h parameter of a transistor in CE arrangement are ____________ arrangement?

• 1. The same as for CB
• 2. The same as for CC
• 3. Different from that in CB
• 4. None of the above

Question: The hfe parameter is called ______________in CE arrangement with output shorted?

• 1. Voltage gain
• 2. Current gain
• 3. Input impedance
• 4. None of the above

Question: If the operating point changes, the h parameters of transistor_____________?

• 1. Also change
• 2. Do not change
• 3. May or may not change
• 4. None of the above

Question: The dimensions of hie parameter are _______________?

• 1. Mho
• 2. Ohm
• 3. Farad
• 4. None of the above

Question: There are ______________ h parameters of a transistor?

• 1. Two
• 2. Four
• 3. Three
• 4. None of the above