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ECET 365 Week 6 Quiz (Devry)

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For more course tutorials visit www.tutorialoutlet.com Product Description 1. Question :

(TCO #6) How many 16-bit PWM channels are available in the Freescale 9S12DG256 microcontroller?

Student Answer: Two Four Seven Eight

Comments:

2. Question :

(TCO #6) When concatenating the two 8-bit PWM Channels 3 and 2 to get a 16bit PWM channel, _____ becomes the low-order byte.

Student Answer: Channel 7 Channel 2 Channel 5 Channel 3


Comments:

3. Question :

(TCO #6) To enable Channel 7 of the PWM to 9S12DG256, which of the following must be done?

Student Answer: Set PWME7 = 1 Set PWME7 = 0 Set CAE7 = 1 Set CAE7 = 0

Comments:

4. Question : (TCO #6) What is Clock SA when PWMSCLA = 0x01 and Clock A = 4MHz?

Student Answer: 5MHz 4MHz 8MHz 2MHz

Comments:


5. Question : (TCO #6) What is Clock SA when PWMSCLA = 0x00 and Clock A = 8MHz?

Student Answer: 8MHz 15625Hz 8MHz 31250Hz

Comments:

6. Question :

(TCO #6) A bus clock is set to 4000 kHz. What is the Clock A’s value if PWMPRCLK = 0x02?

Student Answer: 1MHz 3MHz 2MHz 8MHz

Comments:


7. Question :

(TCO #6) In case of center-aligned PWM, which formula can be used for the duty cycle of the output waveform?

Student Answer:

Duty Cycle = [(PWMPERx - PWMDTYx) / PWMPERx] * 100%

Duty Cycle = [PWMDTYx / PWMPERx] * 100% Duty Cycle = PWMDTYx 100% Both A or B (depends on PPOLx)

Comments:

8. Question :

(TCO #6) In case of center-aligned PWM, which formula can be used for the PWM frequency?

Student Answer:

PWMx frequency = Clock (A, B, SA, or SB) / PWMPERx

PWMx frequency = Clock (A, B, SA, or SB) / (2 * PWMPERx) PWMx frequency = Clock (A, B, SA, or SB) / (4 * PWMPERx) PWMx frequency = Clock (A, B, SA, or SB) / (3 * PWMPERx)

Comments:

9. Question :

(TCO #6) Current passing through a wire creates an electromagnetic field that _____.


Student Answer:

loops around the wire

is directly proportional to the amount of the current flowing inside the wire is strongest closer to the wire satisfies all of the above answers

Comments:

10. Question :

(TCO #6) PWM channels of a microcontroller are designed for control of a _____.

Student Answer: servo motor AC motor stepper motor None of the above


Ecet 365 week 6 quiz (devry)