| Que.
13 |
The maximum overall efficiency of a transformer coupled class A amplifier
is |
| A |
|
78.5% |
| B |
|
25% |
| C |
|
50% |
| D |
|
85% |
|
| Que.
14 |
In an FET as V(GS) is changed from zero to increasing reverse biased the
value of g(m) |
| A |
|
increases |
| B |
|
decreases |
| C |
|
remain constant |
| D |
|
falls suddenly to zero |
|
| Que.
15 |
given for an FET g(m) =95mA/v total capacitance =500pf for a voltage
gain of -30 the bandwidth will be |
| A |
|
100khz |
| B |
|
630khz |
| C |
|
3mhz |
| D |
|
19mhz |
|
| Que.
16 |
for the resonent ckt shows w =10^5,Q=50,R=400 thevalue of C is given by |
| A |
|
250PF |
| B |
|
1000PF |
| C |
|
500PF |
| D |
|
1.25PF |
|
| Que.
17 |
In a class A amplifierusing a transistor under ideal condition the maximum
ac power delivered is 1 watt the maximum transistor dissipation capability
has to be |
| A |
|
1watt |
| B |
|
2watt |
| C |
|
3watt |
| D |
|
4watt |
|
| Que.
18 |
two binary signals A and B are compared the output expression when the
two signals are equal is given by |
| A |
|
ab' +a'b |
| B |
|
ab + (ab)' |
| C |
|
(ab)' |
| D |
|
ab |
|
| Que.
19 |
the most widely used universal gate are |
| A |
|
OR and AND gates |
| B |
|
NOR and NAND gates |
| C |
|
NOR and AND gates |
| D |
|
NAND and OR gates |
|
| Que.
20 |
the microprocessor contains ROM chip contains? |
|
|
control function |
|
|
airthmatic function |
|
|
instructions to execute data |
|
|
memory function |
|