Introduction to Electronics Week 4 Quiz Answer

Introduction to Electronics

Week 4 Quiz Answer

In this article i am gone to share Coursera Course Introduction to Electronics Week 4 Quiz Answer with you..

Week 4 Quiz

Question 1)

Consider a standard diode shown below. Select all of the statements that are true for diodes and diode circuits.

An ideal diode in forward bias can be thought of as a short circuit.

A diode cannot be used to block current flow in a specific direction.

Diodes are used in rectifier circuits, in voltage regulator circuits, in limiter circuits, and as light emitting diodes (LEDs).

The diode voltage, VD, of an ideal diode in forward bias is a positive value larger than 0.

Diodes have three operation regions: one is forward bias, one is reverse bias, and one is reverse breakdown.

Question 2)

For the following circuit with an ideal diode, determine at what time the diode starts conducting (goes into the "ON" state). Assume that the resistor is R = 1500Ω, the battery has a constant voltage of B = 9V, and the varying source is Vs=t2 volts, where t > 0. Enter the value of time (in seconds) without the units.

Answer: 3

Question 3)

The following circuit has ideal diodes. The parameters are V1 = 3V, V2 = 5V, and R = 10Ω.

If a diode is conducting, we say that it is "ON". If a diode is not conducting, we say that it is "OFF". Select which answer is correct.

Both diodes are ON
Both diodes are OFF
Diode 1 is OFF and diode 2 is ON
Diode 1 is ON and diode 2 is OFF

Question 4)

For the circuit in question 3, solve for the current i, in amps. Enter your answer in the box below without units.

Answer: 0.3

Question 5)

Consider the following circuit, where the diode is ideal:

The input to the circuit is shown below. Determine the time periods for which the output waveform equals the input, that is, when V0=Vin. Select all that apply.

t = [0.2, 0.25]
t = [0.05, 0.1]
t = [0, 0.05]
t = [0.15, 0.2]
t = [0.1, 0.15]

Question 6)

With the same circuit and input as in question 5 except using the ideal diode plus voltage source model with Vf = 0.5V, determine

minimum voltage of V0.

Answer: -0.5

Question 7)

In the circuit shown, the diodes are ideal.

For V1=2V V1=2V, V2 = 5V V2=5V, R1 = 2k\OmegaR1=2kΩ, R2 = 1k\OmegaR2=1kΩ, what is I1I1 in amps?

Answer: 0

Question 8)

For the circuit and values of question 7, what is I2I2? Enter your answer in mA.

Answer: 5

Question 9)

For the circuit of question 7, V2 = 5VV2=5V, R1 = 2k\OmegaR1=2kΩ, R2 = 1k\OmegaR2=1kΩ, and I1=1mAI1=1mA. what is V1V1 in volts?

Answer: 7

Question 10)

For the circuit shown, V3 = 6VV3=6V, I1 = 1mAI1=1mA, R3 = 2k\OmegaR3=2kΩ, R4 = 12k\OmegaR4=12kΩ, R5 = 4k\OmegaR5=4kΩ, and R6 = 6k\OmegaR6=6kΩ. Solve for the current I in milliamps, assuming that the diodes are ideal.