Top 250+ Solved Electronic Devices and Circuits MCQ Questions Answer
Q. Each input on a TTL gate is connected to the transistor's
a. base
b. collector
c. gate
d. emitter
Q. The time it takes for an input signal to pass through internal circuitry and generate the appropriate output effect is known as
a. propagation delay
b. rise time
c. fan-out
d. fall time
Q. In a common emitter, unbypassed resister provides
a. voltage shunt feedback
b. current series feedback
c. negative voltage
d. positive current feedback
Q. Negative feedback in an amplifier
a. reduces gain
b. increase frequency&phase distortion
c. reduces bandwidth
d. increases noise
Q. The fan out of a MOS logic gate is higher than that of TTL gates because of its
a. low input impedance
b. high output impedance
c. low output impedance
d. high input impedance
Q. Transformer coupling can be used in amplifiers
a. only power
b. only voltage
c. either power or voltage
d. neither power nor voltage
Q. When negative current feedback is applied to an amplifier, its output impedance
a. increases
b. remains unchanged
c. decreases
d. becomes zero
Q. The frequency response of the combined amplifier can be compared with
a. an or gate
b. a negative feedback amplifier
c. a positive filter
d. an and gate
Q. Minimum interference with frequency response can be given by
a. direct coupling
b. rc coupling
c. transformer coupling
d. instrumentation and control
Q. The impedance of a load must match the impedance of the amplifier so that
a. minimum power is transferred to the load
b. the efficiency can be maintained at low level
c. the signal-to- noise ratio is maximized
d. maximum power is transferred to the load
Q. The ratio output rms power in watts to the input dc power in watts in the different amplifier class is called .
a. gain
b. amplification factor
c. efficiency
d. phase power
Q. The of a common collector configuration is unity
a. voltage gain
b. current gain
c. power gain
d. input impedance
Q. Transmit time is the time taken by the electrons on holes to pass from
a. emitter to collector
b. collector to emitter
c. base to emitter
d. base to collector