Online Electronic Devices Test - Electronic Devices Test - Random

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Total number of questions: 20.
Time allotted: 30 minutes.
Each question carries 1 mark; there are no negative marks.
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The active region of a transistor is bounded by the ________.

cutoff region

saturation region

power dissipation curve

All of the above

[#]

You can select the values for the emitter and collector resistors from the information that is provided for this circuit.

True

False

[#]

What is the unit of the parameter h_o?

Volt

Ohm

Siemen

No unit

[#]

________ is slightly affected if the condition r_o

10R_E is not satisfied in the analysis of an emitter-follower configuration.

Z_i

Z_o

A_v

A_i

[#]

Which of the following FETs has the lowest input impedance?

JFET

MOSFET depletion-type

MOSFET enhancement-type

None of the above

[#]

Refer to the following curves. Calculate I_D at V_GS = 1 V.

8.167 mA

4.167 mA

6.167 mA

0.616 mA

[#]

Determine the value of V_{DS_Q}.

3.5 V

4.86 V

7.14 V

10 V

[#]

________ levels of R_S result in ________ quiescent values of I_D and ________ negative values of V_GS.

Increased, lower, less

Increased, higher, less

Increased, higher, more

Increased, less, lower

[#]

Refer to this figure. If V_GS = –6 V, calculate the value of R_S that will provide this value.

2.2 k

1.2 k

600 k

100 k

[#]

10.

Refer to this figure. If R₆ opened, the signal at the drain of Q₁ would

increase.

decrease.

remain the same.

distort.

[#]

11.

Which FET amplifier(s) has (have) a phase inversion between input and output signals?

common-gate

common-drain

common-source

all of the above

[#]

12.

The ________ amplifier configuration has the highest input impedance and the lowest output impedance of the three basic op-amp configurations.

non-inverting

inverting

voltage-follower

[#]

13.

Which amplifier is commonly used as a frequency multiplier?

class A

class B

class C

all of the above

[#]

14.

Which of the following devices is (are) a component of a digital-to-analog converter (DAC)?

Integrator

Comparator

Digital counter

All of the above

[#]

15.

In Figure 17-1(a)(see question 6), the purpose of R₁ is to

provide a reference voltage.

limit current through the diode.

limit voltage to the op-amp.

provide output voltage sampling.

[#]

16.

What is the resistance of thermistors at room temperature (20ºC)?

5 k

1 k

100

[#]

17.

In both n-type and p-type silicon materials, the ________ is the majority carrier in a Schottky diode.

hole

electron

proton

neutron

[#]

18.

Refer to this figure. Identify the Schottky diode.

[#]

19.

OLEDs can be sprayed onto a substrate using an inkjet printer.

True

False

[#]

20.

Refer to this figure. This filter has a roll-off rate of

20 dB/decade.

40 dB/decade.

60 dB/decade.

80 dB/decade.

[#]

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