ENGR-363 FINAL QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) ALREADY GRADED A+
Normally Closed (NC) contacts on a relay are closed when the coil is in
what state? Ans✓✓✓De-energized
Normally Open (NO) contacts on a relay are closed when the coil is in
what state? Ans✓✓✓Energized
A device that uses electrical energy to mechanically switch electrical
circuits is called a(n): Ans✓✓✓electromechanical relay or relay
Electromechanical solenoids use electrical energy to magnetically cause
a(n): Ans✓✓✓mechanical control action
Another name for a plug-in or ice cube relay is a(n): Ans✓✓✓general
purpose relay
The ______ gate is also called an inverter and usually represents a
normally _____ switch. Ans✓✓✓Not
Closed
The ____ gate represents two or more normally ____ switches in parallel
Ans✓✓✓Or
Open
,Switches in series represent a(n) logical ____ gate. Ans✓✓✓And
The _____ gate will turn on the output if only one input is activated and
turn the output off if both inputs are activated Ans✓✓✓XOR
The opposite of an EXCLUSIVE OR gate is an EXCLUSIVE NOR gate
Ans✓✓✓True
An OR gate operates on the same principle as:
a series circuit
a pneumatic shuttle valve
a parallel circuit
a pneumatic check valve Ans✓✓✓A pneumatic shuttle valve
A parallel circuit
Input devices in series represent which type of logic circuit?
Ans✓✓✓And
How many truth table entries are necessary for a three input logic gate?
Ans✓✓✓8
A gate is a device that: Ans✓✓✓Performs a logical decision based on its
input.
, What diameter cylinder is required to move a 10,000lb load with a
350psi hydraulic supply?
Round calculation numbers and the answer to 2 decimals. Ans✓✓✓6.01
When power is applied to a motor the start up torque is also known
as______ torque Ans✓✓✓Locked Rotor
Name two AC motors that use a centrifugal switch to remove the start
winding when the motor reaches 75% of operating speed?
Ans✓✓✓Split Phase
Capacitor Start
Stepper (Step) motors use a _____ loop control system. Ans✓✓✓Open
Electrical power in the United States is based on a frequency of _____
hertz or cycles per minute. Ans✓✓✓60
Run and Start capacitors can be interchanged or switched with each
other with no harmful results Ans✓✓✓False
Contactors have a common pole to switch between normally open and
normally closed contact points. Ans✓✓✓False
What two types of contactors were discussed? Ans✓✓✓Mechanically
held
ANSWERS (VERIFIED ANSWERS) ALREADY GRADED A+
Normally Closed (NC) contacts on a relay are closed when the coil is in
what state? Ans✓✓✓De-energized
Normally Open (NO) contacts on a relay are closed when the coil is in
what state? Ans✓✓✓Energized
A device that uses electrical energy to mechanically switch electrical
circuits is called a(n): Ans✓✓✓electromechanical relay or relay
Electromechanical solenoids use electrical energy to magnetically cause
a(n): Ans✓✓✓mechanical control action
Another name for a plug-in or ice cube relay is a(n): Ans✓✓✓general
purpose relay
The ______ gate is also called an inverter and usually represents a
normally _____ switch. Ans✓✓✓Not
Closed
The ____ gate represents two or more normally ____ switches in parallel
Ans✓✓✓Or
Open
,Switches in series represent a(n) logical ____ gate. Ans✓✓✓And
The _____ gate will turn on the output if only one input is activated and
turn the output off if both inputs are activated Ans✓✓✓XOR
The opposite of an EXCLUSIVE OR gate is an EXCLUSIVE NOR gate
Ans✓✓✓True
An OR gate operates on the same principle as:
a series circuit
a pneumatic shuttle valve
a parallel circuit
a pneumatic check valve Ans✓✓✓A pneumatic shuttle valve
A parallel circuit
Input devices in series represent which type of logic circuit?
Ans✓✓✓And
How many truth table entries are necessary for a three input logic gate?
Ans✓✓✓8
A gate is a device that: Ans✓✓✓Performs a logical decision based on its
input.
, What diameter cylinder is required to move a 10,000lb load with a
350psi hydraulic supply?
Round calculation numbers and the answer to 2 decimals. Ans✓✓✓6.01
When power is applied to a motor the start up torque is also known
as______ torque Ans✓✓✓Locked Rotor
Name two AC motors that use a centrifugal switch to remove the start
winding when the motor reaches 75% of operating speed?
Ans✓✓✓Split Phase
Capacitor Start
Stepper (Step) motors use a _____ loop control system. Ans✓✓✓Open
Electrical power in the United States is based on a frequency of _____
hertz or cycles per minute. Ans✓✓✓60
Run and Start capacitors can be interchanged or switched with each
other with no harmful results Ans✓✓✓False
Contactors have a common pole to switch between normally open and
normally closed contact points. Ans✓✓✓False
What two types of contactors were discussed? Ans✓✓✓Mechanically
held
