Question 1. The advantage of solid state relay over electromechanical relay is
no wear/tear.
faster.
both A and B.
cheaper.
Question 2. On a CAN bus, one node transmits a bit with CANH of 2.5V and a CANL of 2.5 V. Which one of the following statements is true?
The bit is a dominant state.
The bit can be overridden by a bit in a dominant state.
The bit can be overridden by a bit in a recessive state.
The bit is in an illegal state.
Question 3. The type of cohesion in which the components of a software module operate on the same data is called _____.
logical cohesion
sequential cohesion
communicational cohesion
functional cohesion
Question 4. A computer that executes multiple threads, one at a time, uses _____.
foreground programming
concurrent programming
background programming
parallel programming
Question 5. An op amp requires the design equation
Vout = 50Vin - Vref + AgVg. What is the value of Ag?
-48
48
-3
3
Question 6. The execution of an interrupt request routine is called a _____.
background thread
foreground thread
process
interrupt request
Question 7. In connecting the stepper motor to the microcontroller, generally, we must have
electromechanical relay.
current driver.
optoisolator.
Any of the above
Question 8.In a CAN bus, there are three computers: Computer A, Computer B, and Computer C. The messages being sent are 1 millisecond long. Computer A starts sending a message on the bus. After 500 microseconds later, Computer B starts to send a message. After 500 microseconds later, Computer C starts to send a message. When does Computer A retransmit its message?
After 2 milliseconds
After 1 millisecond
After 1.5 milliseconds
Never. Computer A will not retransmit.
Question 9.The type of cohesion in which all components of a software module combine to implement a single objective, and each component is necessary, is called _____.
logical cohesion
sequential cohesion
temporal cohesion
functional cohesion
Question 10. A _____ records values of output ports controlled by the program.
monitor
filter
logic analyzer
profile
Question 11. The use of multiple cores to execute threads simultaneously is called _____.
foreground programming
concurrent programming
background programming
parallel programming
Question 12. The voltage dropout of a voltage regulator is 1.6 volts. If a 10-volt output is required, what is the minimum regulator input voltage?
11.6V
8.4 V
12.6V
9.4V
Question 13. The default vector address for the XIRQ signal is _____.
FFE4
FFE0
FFF4
FFF0
Question 14. A communications channel has a bandwidth of 1,000 Hz and an SNR (Signal-to-Noise Ratio) of 20 dB. What is the maximum possible data rate?
6.7 kbits/sec
4.4 kbits/sec
20 kbits/sec
50 kbits/sec
Question 15. An H-bridge allows a 4-amp current pulse to the drive motor. What is the average current if the duty cycle is 75% and the pulse frequency is 2 kHz?
2A
3A
2.5A
2.75A
Question 16. A communications channel has a bandwidth of 4,500 Hz and an SNR (Signal-to-Noise Ratio) of 40 dB. What is the maximum possible data rate?
59.6 kbits/sec
21 kbits/sec
160 kbits/sec
100 bits/sec
Question 17. An H-bridge allows a 2-amp current pulse to the drive motor. What is the average current if the duty cycle is 25%, and the pulse frequency is 2 kHz?
2A
1.75A
1.5A
0.5A
Question 18. Calculate the minimum PWM frequency for a small permanent magnet DC motor with a time constant of 15 milliseconds. Show your reasoning.
Question 19. How would you implement a wireless capability for a robot or Smart Car, i.e. should you build or buy?
Question 20. What are the differences between a Moore Finite State Machine (FSM) and a Mealy FSM?
Question 21. How does a call graph differ from a data flow graph?
Question 22. What simple electrical device is used to conduct high frequency noise to ground?
Question 23. Why is an interrupt routine slower than procedural code?
Question 24. Compare the advantages and disadvantages of using an optoisolator versus a relay as an interface to an alarm clock circuit.