Electronics Set 6 - ilmijazeera

Results

#1. A semi-conductor can be used as a rectifier because

It has low resistance to the current flow when forward biased

It has high resistance to the current flow when reversed biased

It has low resistance to the current flow when forward biased and high resistance when reversed biased

None of the above

#2. The central region of a transistor is called:

Base

Emitter

Collector

Neutral

#3. The SI unit of current gain is:

Ampere

Volt

Ohm-mete

It has no units

#4. A NAND gate with two inputs A & B has an output 0 if

A is 0

B is 0

Both A and B are

Both A and B are zero

#5. The gain G of non-inverting operational amplifier is

G = - a_ {z}/mu_ {z}

G = 1 + a_ {2}/a_ {1}

G = pi_ {2}/pi_ {1}

G = 1 - x_ {2}/x_{1}

#6. A diode characteristics curve is a graph plotted between

Current and time

Voltage and time

Voltage and current

Forward voltage and reverse current

#7. The output of AND gate will be 1 when

Both inputs are at 0

Either one input is at 1

Both inputs are at 1

None of these

#8. For non-inverting amplifiers if R_ {1} = ∞ * Omega R_ {2} = 0Omega then gain of amplifier is

-1

infinite

#9. An expression for current gain of a transistor is given by

Beta = I_ {b}/I_{C}

Beta = I_ {B} + I_{C}

Beta = l_{C}-l_ {b} d)

Beta = I_{C}/I_ {B}

#10. In n-type materials, the minority carriers are

Free electrons

Holes

Protons

Mesons

#11. Transistors are made from

Plastics

Metals

Insulators

Doped semi-conductors

Finish