Robotics

Question 1

1Before measuring a resistor with a multimeter, you should

Medium

A. hold both probe tips with your fingers B. switch off the power and, if possible, disconnect one leg of the resistor C. turn up the supply voltage D. set the meter to the current (A) range

Question 2

2A capacitor across a DC motor's terminals helps to

Medium

A. reduce electrical noise B. store the program C. increase its speed greatly D. reverse the motor

Question 3

3By De Morgan's theorem, NOT(A·B) equals

Medium

A. Ā·B̄ B. A·B C. Ā + B̄ D. A + B

Question 4

4A potentiometer used to dim a lamp works as a

Easy

A. variable resistor B. fuse C. switch only D. diode

Question 5

5How many rows does the truth table of a logic circuit with 3 inputs have?

Easy

A. 6 B. 8 C. 9 D. 3

Question 6

6What is the value of A·Ā (A AND NOT A)?

Easy

A. A B. Ā C. 1 D. 0

Question 7

7A pull-up resistor ensures a digital input reads

Medium

A. HIGH when the switch is open B. nothing C. LOW always D. random values

Question 8

8A flip-flop is a circuit that

Hard

A. converts AC to DC B. amplifies signals C. produces light D. stores one bit of data

Question 9

9A voltage divider with 10 kΩ and 20 kΩ across 9 V gives across the 20 kΩ resistor

Hard

A. 6 V B. 9 V C. 3 V D. 4.5 V

Question 10

10A Karnaugh map is used to

Easy

A. draw robot parts in 3D B. simplify Boolean expressions C. measure resistance D. tune a PID controller