1. The most significant factor in the relative manufacturing cost of components is ?

the area occupied by the component

the position of the component on the slice

number of electrode connections

the shape of the component

Answer: the area occupied by the component

Explanation:


2. Which one of the following statements is correct In the context of IC fabrication, metallisation means ?

connecting metallic wires

covering with a metallic cap

formation of interconnecting conduction pattern and bonding pads

doping SiO, layer

Answer: formation of interconnecting conduction pattern and bonding pads

Explanation:


3. The drain-source voltage at which drain current becomes nearly constant, is called ?

pinch-off voltage

pick-off voltage

breakdown voltage

barrier voltage

Answer: pinch-off voltage

Explanation:


4. Why npn transistors are preferred over pnp-transistors ?

Mobility of majority carrier in npn transistors is greater. than the mobility of majority carrier in pnp transistors

Bias voltage required in npn is greater than in pnp-transistors

Bias voltage required in npn is less than in pnp transistors

Leakage current in npn transistors is less than pap-transistors

Answer: Mobility of majority carrier in npn transistors is greater. than the mobility of majority carrier in pnp transistors

Explanation:


5. In a properly biased N-P-N transistor, most of the electrons from the emitter ?

are stopped by the function barrier

pass to the collector through the base

recombine with holes in base

recombine with holes in emitter itself

Answer: pass to the collector through the base

Explanation:


6. For correct working of an N-P-N bipolar junction transistor, the different electrodes should have the following polarities with respect to an emitter ?

collector -ve, base-ve

collector +ve, base-ve

collector +ve, base +ve

collector -ve, base +ve

Answer: collector +ve, base +ve

Explanation:


7. An electron device means the device in which the conduction of electrons takes place through ?

a gas, semiconductor or vacuum

a gas

a semiconductor

vacuum

Answer: a gas, semiconductor or vacuum

Explanation:


8. In a bipolar transistor at room temperature, if the emitter current doubled the voltage across its base-emitter junction ?

halves

increases by about 20 mV

doubles

decreases by about 20 mV

Answer: halves

Explanation:


9. JFET has main drawback of ?

having small gain-bandwidth product

having high output impedance

having low input impedance

being noisy

Answer: having small gain-bandwidth product

Explanation:


10. What is the main advantage of a JEET cascade amplifier ?

Low output impedance

High voltage gain

High input impedance

Very low input capacitance

Answer: High voltage gain

Explanation: