Q4.Statement: There were different streams of freedom movements in colonial India
carried out by the moderates, liberals, radicals, socialists, and so on.
Which one of the following is the best inference from the above statement?
Answer : Option DExplaination / Solution: No Explaination.
In the circuit shown below what is the output voltage (vout)if a silicon transistor Q and an ideal op-amp are used?
Answer : Option BExplaination / Solution:
For the given ideal op-amp, negative terminal will be also ground (at zero voltage) and so, the collector terminal of the BJT will be at zero voltage.
i.e., VC = 0 volt
The current in 1 kΩ resistor is given by
This current will flow completely through the BJT since, no current will flow into the ideal op-amp (I/P resistance of ideal op-amp is infinity). So, for BJT we have
i.e.,the base collector junction is reverse biased (zero voltage) therefore, the collector current (IC ) can have a value only if base-emitter is forward biased.
Q9.In a forward biased pn junction diode, the sequence of events that best describes the mechanism of current flow is
Answer : Option AExplaination / Solution:
The potential barrier of the pn junction is lowered when a forward bias voltage is applied, allowing electrons and holes to flow across the space charge region (Injection) when holes flow from the p region across the space charge region into the n region, they become excess minority carrier holes and are subject to diffuse, drift and recombination processes.
Hence correct option is (A)
Q10.In IC technology, dry oxidation (using dry oxygen) as compared to wet oxidation (using steam or water vapor) produces
Answer : Option DExplaination / Solution:
In IC technology, dry oxidation as compared to wet oxidation produces superior quality oxide with a lower growth rate
Total Question/Mark :
Scored Mark :
Mark for Correct Answer : 1
Mark for Wrong Answer : -0.5
Mark for Left Answer : 0