Devry ECET365 Week 6 Quiz

ECET 365 Week 6 Quiz1.Question :(TCO #6) How many 16-bit PWM channels are available in the Freescale 9S12DG256 microcontroller?Student Answer:FourSevenEightComments:2.Question :(TCO #6) When concatenating the two 8-bit PWM Channels 3 and 2 to get a 16-bit PWM channel, _____ becomes the low-order byte.Student Answer:Channel 2Channel 5Channel 3Comments:3.Question :(TCO #6) To enable Channel 7 of the PWM to 9S12DG256, which of the following must be done?Student Answer:Set PWME7 = 0Set CAE7 = 1Set CAE7 = 0Comments:4.Question :(TCO #6) What is Clock SA when PWMSCLA = 0x01 and Clock A = 4MHz?Student Answer:4MHz8MHz2MHzComments:5.Question :(TCO #6) What is Clock SA when PWMSCLA = 0x00 and Clock A = 8MHz?Student Answer:15625Hz8MHz31250HzComments:6.Question :(TCO #6) A bus clock is set to 4000 kHz. What is the Clock A’s value if PWMPRCLK = 0x02?Student Answer:3MHz2MHz8MHzComments: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 = [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) / (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 wireis directly proportional to the amount of the current flowing inside the wireis strongest closer to the wiresatisfies all of the above answersComments:10.Question :(TCO #6) PWM channels of a microcontroller are designed for control of a _____.Student Answer:servo motorAC motorstepper motorNone of the above