Question: 1 -

A bipolar junction transistor has a common base forward short circuit current gain of 0.99 . Its common emitter forward short circuit current gain will be

99

200

100

50

Answer:

99

Solution not available.

Question: 2 -

An n-channel enhancement MOSFET is usually in the OFF-state and can be turned ON by applying an

Appropriate voltage (positive or negative at the gate)

None of the above

Appropriate negative voltage at the gate

Appropriate positive voltage at the gate

Answer:

Appropriate positive voltage at the gate

Solution not available.

Question: 3 -

A CMOS amplifier when compared to an n-channel MOSFET , has the advantage of

Higher Current gain

Higher Voltage gain

Higher cut-off frequency

Lower current drain from the power supply , thereby less dissipation

Answer:

Lower current drain from the power supply , thereby less dissipation

Solution not available.

Question: 4 -

The reverse bias breakdown of high speed silicon transistors is due to

Zener breakdown mechanism at base-emitter junction and Avalanche breakdown mechanism at base- collector junction

Zener breakdown mechanism at Base-Collector junction and Avalanche breakdown mechanism at Base-Emitter junction

Avalanche breakdown mechanism at both the junctions

Zener breakdown mechanism at both the junctions

Answer:

Zener breakdown mechanism at base-emitter junction and Avalanche breakdown mechanism at base- collector junction

Solution not available.

Question: 5 -

The modulation of effective mass base width by collector voltage is known as Early effect , Hence reverse collector voltage ,

Increases both alpha and beta

Increases alpha but decreases beta

Decreases both alpha and beta

Decreases alpha but increases beta

Answer:

Increases both alpha and beta

Solution not available.