Question

Question 9

(TCO 2) A _____ is similar to a print statement, but takes much less time to execute.

heartbeat

monitor

dump

profile

Question 10

(TCO 3) For the permanent magnet of the DC motor, we have _____.

one lead for + volt

two leads for + and –

four leads

eight leads

Question 11

(TCO 5) The voltage dropout of a voltage regulator is 1.6 V. If a 14 V output is required, what is the minimum regulator input voltage?

16 V

15.6 V

13.4 V

12.4 V

Question 12

(TCO 6) The C syntax for specifying a Timer Channel 3 subroutine is _____.

interrupt 11

interrupt 10

interrupt 12

interrupt 9

Question 13

(TCO 6) The TOF interrupt number is _____.

16

15

14

13

Question 14

(TCO 5) An H-bridge allows a 5 A current pulse to the drive motor. What is the average current if the duty cycle is 50% and the pulse frequency is 2 kHz?

1.25 A

2.5 A

10 A

2 A

Question 15

(TCO 4) A communications channel has a bandwidth of 2,000 Hz and a signal-to-noise ratio (SNR) of 40 dB. What is the maximum possible data rate?

11 kbits/sec

50 bits/sec

27 kbits/sec

80 kbits/sec

Question 16

(TCO 5) An H-bridge allows a 2.5 A current pulse to the drive motor. What is the average current if the duty cycle is 25% and the pulse frequency is 2 kHz?

0.625 A

4 A

10 A

2.5 A

Answer 1

Q9. Dump takes less time to execute than printf

Q10. Two for +ve and -ve

Q11. 15.6 should be the minimum input voltage.

Q12. Interrupt 9

Q13. 14 is the Timer Overflow interrupt

Q14.10 A

Q15. Data rate = bandwidth * log2(1+SNR) = 11Kbps

Q16. 2.5A