Electrical:4th Year Final Study Guide
with Solved Solutions 2026.
What does the NEC consider working space? - Answer The required width of the working
space is the greater of 30 inches or the width of the equipment.
Left hand Coil Rule - Answer Explanation of the direction of a magnetic field around a coil,
relative to the direction of the current in the coil. The thumb points to direction of current flow
and fingers point to the magnetic flux
What is the best advantage to using cable tray? - Answer
What is the biggest disadvantage to using cable tray? - Answer
Starting Characteristics of Design A motor - Answer Full Voltage starting, LRC higher than B,C,
and D
Starting Characteristics of Design B motor - Answer Full voltage starting with a developing
locked rotor
How does a round rotor motor start and what are the benefits? - Answer Low inrush current,
inserting high resistance into the rotor circuit
What are the limitations of a round rotor motor - Answer Complication and maintenance
associated with brushes and slip rings
How does a squirrel cage motor start and what are the benefits? - Answer The field windings
in the stator of an induction motor set up a rotating magnetic field through the rotor. With low
cost and less maintenance
What are the limitations of a squirrel cage motor? - Answer Poor starting torque and high
inrush current
Generally, very generally how does a single phase motor start vs a poly phase motor? - Answer
1-phase induction motors produce low starting torque, whereas 3phase induction motors
produce high starting torque. The efficiency of a 1-phase induction motor is less as compared to
a 3phase induction motor.
, How does a time delay fuse work? Any other names? - Answer Carries starting current and
dual element
What is the best way to prevent electrical hazards to the worker? - Answer Electrically Safe
Working Condition
Clearing time of our OCPD is the most important part in determining the severity of an electrical
incident energy. Why? - Answer # of cycles that occur
By passing the OSH act what did this do? - Answer Assured a safe and healthful working
condition
CFR 29 1926 is responsible for what? - Answer Safety and Health Regulations for construction
CFR 29 1910 is responsible for what? - Answer Process safety management of highly
hazardous chemicals
1926.21 (b) (2) says what? - Answer Employer shall instruct each employee in the recognition
of unsafe work conditions
1910.132(a) says what? - Answer PPE that's suited for the application shall be provided
The 2000 edition of NFPA 70E introduced charts to assist the user in applying appropriate PPE
for common tasks. True or False? - Answer
What 3 things do we consider for our shock Risk assessments? - Answer Voltage, Boundary
Requirements, and PPE
What are some maintenance considerations for OCPD? - Answer Tightening of connections,
looking for signs of excessive heat, and ensuring proper function
Analog Control Signal - Answer Convey info with units of measurement such as temp, cubic
feet per minute, meters per second, and water column
Digital Control Signal - Answer Binary only known as ON or OFF
Network Control Signal - Answer the output of learning and processing block, which are sent
to different output interfaces to produce desired output in the real physical world.
with Solved Solutions 2026.
What does the NEC consider working space? - Answer The required width of the working
space is the greater of 30 inches or the width of the equipment.
Left hand Coil Rule - Answer Explanation of the direction of a magnetic field around a coil,
relative to the direction of the current in the coil. The thumb points to direction of current flow
and fingers point to the magnetic flux
What is the best advantage to using cable tray? - Answer
What is the biggest disadvantage to using cable tray? - Answer
Starting Characteristics of Design A motor - Answer Full Voltage starting, LRC higher than B,C,
and D
Starting Characteristics of Design B motor - Answer Full voltage starting with a developing
locked rotor
How does a round rotor motor start and what are the benefits? - Answer Low inrush current,
inserting high resistance into the rotor circuit
What are the limitations of a round rotor motor - Answer Complication and maintenance
associated with brushes and slip rings
How does a squirrel cage motor start and what are the benefits? - Answer The field windings
in the stator of an induction motor set up a rotating magnetic field through the rotor. With low
cost and less maintenance
What are the limitations of a squirrel cage motor? - Answer Poor starting torque and high
inrush current
Generally, very generally how does a single phase motor start vs a poly phase motor? - Answer
1-phase induction motors produce low starting torque, whereas 3phase induction motors
produce high starting torque. The efficiency of a 1-phase induction motor is less as compared to
a 3phase induction motor.
, How does a time delay fuse work? Any other names? - Answer Carries starting current and
dual element
What is the best way to prevent electrical hazards to the worker? - Answer Electrically Safe
Working Condition
Clearing time of our OCPD is the most important part in determining the severity of an electrical
incident energy. Why? - Answer # of cycles that occur
By passing the OSH act what did this do? - Answer Assured a safe and healthful working
condition
CFR 29 1926 is responsible for what? - Answer Safety and Health Regulations for construction
CFR 29 1910 is responsible for what? - Answer Process safety management of highly
hazardous chemicals
1926.21 (b) (2) says what? - Answer Employer shall instruct each employee in the recognition
of unsafe work conditions
1910.132(a) says what? - Answer PPE that's suited for the application shall be provided
The 2000 edition of NFPA 70E introduced charts to assist the user in applying appropriate PPE
for common tasks. True or False? - Answer
What 3 things do we consider for our shock Risk assessments? - Answer Voltage, Boundary
Requirements, and PPE
What are some maintenance considerations for OCPD? - Answer Tightening of connections,
looking for signs of excessive heat, and ensuring proper function
Analog Control Signal - Answer Convey info with units of measurement such as temp, cubic
feet per minute, meters per second, and water column
Digital Control Signal - Answer Binary only known as ON or OFF
Network Control Signal - Answer the output of learning and processing block, which are sent
to different output interfaces to produce desired output in the real physical world.
