Plc Test 1 Questions With All Correct &
Verified Answers
1. In conventional logic circuits, binary 1 represents ? All of these chocies
are correct
A.) the presence of a signal B.) the occurrence
of some event C.) a high voltage level D.) All of
these choices are correct.
2. The OR function, implemented using drawn is ?
contacts, re- quires contracts in. A.) series
B.) parallel C.) se- ries/parallel D.)
parallel/series
3. The logic symbol shown
A.)AND function
B.) OR function
C.)NOT function
D.)NAND function
4. There is no difference between a relay
schematic and a ladder logic program.
True or false
5. Programmable control is based on logic
functions that are programmable and easily
changed. True or false
6. The logic functions used by PLCs is
A.) AND
B.) OR
C.)NOT
D.)All of these are correct
7. The Boolean expression for the logic circuit
, Plc Test 1 Questions With All Correct &
Verified Answers
Parallel
OR function
False
True
All of these are correct
AB+C
, Plc Test 1 Questions With All Correct &
Verified Answers
8. All inputs to a NAND gate must be 1 to False
produce a 1 output. True or false
9. A single rung of a ladder logic program is arranged A.) input conditions
connected
with: from left to right, with output at
A.)input conditions connected from left the far right.
to right, with the output at the far right.
B.)input conditions connected from right
to left, with the outputs at the far left.
C.)the output in the center and the
input condi- tions to the left and right of
it.
D.)all input conditions in parallel and all
output conditions in series.
10. The Boolean equation for the logic symbol is ? Y= A not
Answer is D
11. A two input OR function, expressed as a False
Boolean equation would be y= AB.
true or false
12. The truth table for the logic symbol is ? It's a NAND
So the answer is B
13. The logic symbol drawn is that of B.)NOR function
the ?
A.)NOT function
Verified Answers
1. In conventional logic circuits, binary 1 represents ? All of these chocies
are correct
A.) the presence of a signal B.) the occurrence
of some event C.) a high voltage level D.) All of
these choices are correct.
2. The OR function, implemented using drawn is ?
contacts, re- quires contracts in. A.) series
B.) parallel C.) se- ries/parallel D.)
parallel/series
3. The logic symbol shown
A.)AND function
B.) OR function
C.)NOT function
D.)NAND function
4. There is no difference between a relay
schematic and a ladder logic program.
True or false
5. Programmable control is based on logic
functions that are programmable and easily
changed. True or false
6. The logic functions used by PLCs is
A.) AND
B.) OR
C.)NOT
D.)All of these are correct
7. The Boolean expression for the logic circuit
, Plc Test 1 Questions With All Correct &
Verified Answers
Parallel
OR function
False
True
All of these are correct
AB+C
, Plc Test 1 Questions With All Correct &
Verified Answers
8. All inputs to a NAND gate must be 1 to False
produce a 1 output. True or false
9. A single rung of a ladder logic program is arranged A.) input conditions
connected
with: from left to right, with output at
A.)input conditions connected from left the far right.
to right, with the output at the far right.
B.)input conditions connected from right
to left, with the outputs at the far left.
C.)the output in the center and the
input condi- tions to the left and right of
it.
D.)all input conditions in parallel and all
output conditions in series.
10. The Boolean equation for the logic symbol is ? Y= A not
Answer is D
11. A two input OR function, expressed as a False
Boolean equation would be y= AB.
true or false
12. The truth table for the logic symbol is ? It's a NAND
So the answer is B
13. The logic symbol drawn is that of B.)NOR function
the ?
A.)NOT function
