ECET 365 DeVry Complete Quiz Package

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ECET 365 DeVry Complete Quiz Package

ECET365

ECET 365 DeVry Week 2 Quiz

  1. Question :(TCO #5)Identify the step size for an 8-bit analog-to-digital converter with Vref= 2.5 VDC?
  • 10 millivolts
  • 25 millivolts
  • 4.9 millivolts
  • 5 volts
  1. Question :(TCO # 5)How many steps are available with a 10-bit ADC?
  • 10
  • 1024
  • 512
  • 256
  1. Question :(TCO #5)What is the cutoff frequency for a low-pass filter with a resistor R = 3000 and a capacitor C = .01 µf?
  • f = 5.3 KHz
  • f = 3300 Hz
  • f = 120 KHz
  • f = 6 KHz
  1. Question :(TCO #5)A band-stop filter is a filter that _____ frequencies below low-limit and above high-limit frequencies and _____ frequencies between the limits.
  • blocks; blocks
  • passes; blocks
  • blocks; passes
  • has; blocks
  1. Question :(TCO #5)A bridge with R1= 5.1 K, R2= 2 K, and R3= 15 K can be at null if R4is _____.
  • 10.5 K
  • 5.88 K
  • 588
  • 1 K
  1. Question : (TCO #5)An instrumentation amplifier with two buffers has a feedback resistor of 100 K. The two resistors from the buffer’s output to the input of the last stage OP-Amp are 1 K resistors. Voltage levels to the non-inverting buffer inputs. Voltage levels to the non-inverting buffer inputs are V1= .06 volt and V2= .02 volts. What is Voutof the instrumentation amplifier?
  • 4 Volts
  • 20.4 Volts
  • 3.3 Volts
  • 15.3 Volts
  1. Question : (TCO #5)An embedded system with an 8-bit analog-to-digital converter is connected to a transducer with an output voltage of 10 millivolts. This signal is amplified by an amplifier with a gain of 25. Assume that this signal level is appropriate for the ADC input. If the reference voltage of the ADC converter is 5 volts, what will be the output of the ADC in binary form?
  • 01100110
  • 00110011
  • 00001101
  • 01111011
  1. Question: (TCO #5)An 8-bit analog-to-digital converter has maximum output voltage of 2.5 VDC. What is the reference voltage to this ADC?
  • 2.5 VDC
  • 5 VDC
  • 1.25 VDC
  • None of the above
  1. Question : (TCO #5)A well-behaved analog signal with a frequency of 20 kHz is being sampled. What is the sampling frequency if frequency aliasing occurs?
  • 90 kHz
  • 40 kHz
  • 85 kHz
  • 60 khz
  1. Question : (TCO #5)To model a nonlinear transducer, one can _____.
  • use empirically determined nonlinear equation
  • use a piecewise linear system
  • use a lookup table located in memory
  • All of the above

 

 

ECET 365 DeVry Week 3 Quiz

  1. Question : (TCO #3)Which interrupt is non-maskable?
  • Software interrupt (SWI)
  • Interrupt from a device connected to IRQ pin of HCS12 microcontroller
  • Both A and B
  • Interrupt by multiple devices connected to IRQ pin of HCS12 microcontroller
  1. Question : (TCO #3)Which of the following interrupts has the highest priority?
  • TCNT timer overflow
  • SCI0
  • ATD0
  • ATD1
  1. Question : (TCO #3)Which selection is connected to the reset module in the HCS12 microcontroller?
  • Reset pin
  • ADC0
  • ADC1
  • None of the above
  1. Question : (TCO #3)Which bit can mask a maskable interrupt?
  • S bit
  • Z bit
  • N bit
  • None of the above
  1. Question : (TCO #3)In the HCS12 microcontroller, the address range 0xFFFE – 0xFFFF in the interrupt vector table is assigned to which of the following?
  • Clock monitor fail reset
  • ATD0
  • Reset
  • COP failure reset
  1. Question : (TCO #3)Freescale utilizes BDM to _____.
  • check each instruction of a program individually
  • reset CPU by setting IRQ pin to high-level logic
  • check changes in memory and CPU register for each instruction execution
  • Both A and C
  1. Question : (TCO #3)Watch dog timer is a utility that _____.
  • can reset the microcontroller whenever a program locks up.
  • can catch errors due to memory corruption
  • makes sure that a program does go to an unintentional infinite loop sequence
  • Both A and B
  1. Question : (TCO #3) When an interrupt occurs, _____.
  • in one stage, the contents of the CPU move to RAM memory
  • the CPU finishes executing its current instruction before it starts running an interrupt thread
  • all interrrupts will be ignored if the I bit is zero
  • Both A and B
  1. Question : (TCO #3)Which combination is an appropriate way of setting up the PORTJ interrupt to enabled?
  • Pin I of CCR = 0
  • Pin I of CCR = 1
  • Pin I of CCR = 1 and PIEJ7 = 1
  • Pin I of CCR = 0 and PIEJ6 = 0
  1. Question : (TCO #3)Which of the following interrupts has the highest priority immediately after a microcontroller reset?
  • Reset
  • XIRQ
  • COP
  • All have the same level of priority.

 

 

ECET 365 DeVry Week 4 Quiz

  1. Question : (TCO #1, 2, and 7)Select the header file in CodeWarrior for the Freescale MC9s12DG256.
  • mc9s12dg256.h
  • mc9s12dg256.header
  • mc9s12dg256.asm
  • mc9s12dg256
  1. Question : (TCO #1, 2, and 7)_____ is part of the UNIX OS user layer.
  • API
  • Device driver
  • Shell
  • Core
  1. Question : (TCO #1, 2, and 7)A multitask operating system is more feasible in _____.
  • an embedded system
  • a computer with multiple processors
  • a processor with two accumulators
  • a computer with multiple hard disks
  1. Question : (TCO #1, 2, and 7)In layered software architecture, the main module is usually found within _____.
  • the last (lowest) layer
  • the API
  • the first (top) layer
  • a module inside a thread
  1. Question : (TCO #1, 2, and 7)The user of a module may be interested in _____.
  • passing values to the module
  • the output format of the module
  • who wrote the module
  • Both A and B
  1. Question : (TCO #1, 2, and 7)Identify the computer language commonly used for embedded programming.
  • C
  • Assembly
  • Both A and B
  • Pascal
  1. Question : (TCO #1, 2, and 7)Which of the following commands loads hexadecimal number 44 to accumulator A?
  • LDAA #$44
  • LDAA #44
  • LDA #44
  • LDAA 44$
  1. Question : (TCO #1, 2, and 7)C ++ encapsulation is _____.
  • grouping functions and variables into one class
  • grouping only functions in one class
  • grouping only variables in one class
  • grouping functions and variables in multiple classes
  1. Question : (TCO #1, 2, and 7)Information shared by multiple program modules is known as _____.
  • a static int
  • a global variable
  • a local variable
  • a function
  1. Question : (TCO #1, 2, and 7)A multichannel digital storage scope is known as _____.
  • an ICE
  • a logic analyzer
  • a spectrum analyzer
  • a network analyzer

 

 

ECET 365 DeVry Week 5 Quiz

  1. Question : (TCO #5)In an asynchronous data transfer _____.
  • the transmitter and receiver clock must be exactly the same all the time
  • the receiver clock must be exactly the same or multiple times the transmitter clock
  • it is not necessary to have a clock in the receiver
  • None of the above
  1. Question : (TCO #5)Synchronization between data transmitter and receiver _____ data transfer.
  • is necessary in asynchronous
  • is necessary in synchronous
  • is necessary in both asynchronous and synchronous data transfer
  • is not necessary in both an asynchronous and synchronous
  1. Question : (TCO #5)Which register is utilized in setting the baud rate in a SCI interface?
  • SCIBDH
  • SCI0CR2
  • SCI0BDL
  • Both A and C
  1. Question : (TCO #5)To sample data at the falling edge of the clock when using SPI, _____.
  • CPA in SPICR1 must be 0
  • MSTR in SPICR1 must be 0
  • CPA in SPICR1 must be 1
  • MSTR in SPICR1 must be 1
  1. Question : (TCO #5)A SPI master IC connects to slave IC with _____.
  • five wires
  • one wire
  • four wires
  • wireless
  1. Question : (TCO #5) Communication between two modems through telephone lines is _____.
  • serial
  • parallel
  • digitalall the time
  • Both A and C
  1. Question : (TCO #5)SPI implements a/an _____ protocol.
  • asynchronous
  • synchronous
  • parallel
  • TCP
  1. Question : (TCO #5)In full-duplex data transfer, _____.
  • data transfer from the transmitter only
  • data bits transfer simultaneously in both directions
  • data bits transfer in both directions but not simultaneously
  • data bits transfer in a parallel bus
  1. Question : (TCO #5)High voltage level in a TTL chip is _____.
  • 12 volts
  • 5 volts
  • -5 volts
  • -12 volts
  1. Question : (TCO #5)USB utilizes _____.
  • a serial data transfer
  • a parallel data transfer
  • a mixed parallel/serial data transfer
  • a daisy chain to connect maximum of 10 devices

 

 

ECET 365 DeVry Week 6 Quiz

  1. Question : (TCO #6)How many 16-bit PWM channels are available in the Freescale 9S12DG256 microcontroller?
  • Two
  • Four
  • Seven
  • Eight
  1. 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.
  • Channel 7
  • Channel 2
  • Channel 5
  • Channel 3
  1. Question : (TCO #6)To enable Channel 7 of the PWM to 9S12DG256, which of the following must be done?
  • Set PWME7 = 1
  • Set PWME7 = 0
  • Set CAE7 = 1
  • Set CAE7 = 0
  1. Question : (TCO #6)What is Clock SA when PWMSCLA = 0×01 and Clock A = 4MHz?
  • 5MHz
  • 4MHz
  • 8MHz
  • 2MHz
  1. Question : (TCO #6)What is Clock SA when PWMSCLA = 0×00 and Clock A = 8MHz?
  • 8MHz
  • 15625Hz
  • 8MHz
  • 31250Hz
  1. Question : (TCO #6)A bus clock is set to 4000 kHz. What is the Clock A’s value if PWMPRCLK = 0×02?
  • 1MHz
  • 3MHz
  • 2MHz
  • 8MHz
  1. Question : (TCO #6)In case of center-aligned PWM, which formula can be used for the duty cycle of the output waveform?
  • Duty Cycle = [(PWMPERx – PWMDTYx) / PWMPERx] * 100%
  • Duty Cycle = [PWMDTYx / PWMPERx] * 100%
  • Duty Cycle = PWMDTYx 100%
  • Both A or B (depends on PPOLx)
  1. Question : (TCO #6)In case of center-aligned PWM, which formula can be used for the PWM frequency?
  • 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)
  1. Question : (TCO #6)Current passing through a wire creates an electromagnetic field that _____.
  • 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
  1. Question : (TCO #6)PWM channels of a microcontroller are designed for control of a _____.
  • servo motor
  • AC motor
  • stepper motor
  • None of the above