RST Study - Digital Electronics/ Boolean/Motor Controls

Question 1

? is an integrated circuit that can amplify weak
electric signals. Has two input pins and one output pin. Its basic role is to amplify and
output the voltage difference between the two input pins.

Answer 1

Operational Amplifier

Know the Pin-Out

Question 2

Debouncing is hardware or software that ensures that a ? signal will result in only a ? opening or closing of a contact

Answer 2

Single , single

Question 3

AND Gate Truth Table

know the symbol

Answer 3

A I B I Output
0    0       0
0    1        0
1     0       0
1     1         1

Question 4

OR Gate Truth Table

Know the symbol

Answer 4

A I B I Output
0    0       0
0    1         1
1     0        1
1     1         1

Question 5

NAND Gate Truth Table

Know the symbol

Answer 5

A I B I Output
0    0        1
0    1         1
1     0        1
1     1         0

Question 6

NOR Gate Truth Table

Know the symbol

Answer 6

A I B I Output
0    0       1
0    1        0
1     0       0
1     1        0

Question 7

High output = ?

Answer 7

1 / On / True

Question 8

Low Output = ?

Answer 8

0 / Off / False

Question 9

A NOT gate is also known as a(n) ?

Answer 9

Inverter
Input I Output
0 1
1 0

Question 10

What do fuses and circuit breakers protect against?

Answer 10

Short Circuits

Question 11

In reference to motor controls - Dotted lines indicate ?

Answer 11

Mechanical Interlocks

Question 12

Scorch/Burn Marks on a bus bar in an MCC is an indication of what?

Answer 12

A loose or faulty termination that causes overheating.