Electrical level 3 final exam questions
with correct answers | RATED A+
What type of transformer 120 V center underground 240 V - CORRECT ANSWER -Wye
Increase power factor decrease electricity by large inductive load - CORRECT ANSWER -capacitor
Coil winding on load is called - CORRECT ANSWER -secondary
Minimum fire rating for transformer - CORRECT ANSWER -3 hours
Synchronize speed of induction, determined by - CORRECT ANSWER -frequency
One of three factors cause three phases to rotate - CORRECT ANSWER -voltage are 120° out of
phase
feeder serving motor 5, 10, 15 FLA minimum ampacity - CORRECT ANSWER -33.75
maximum recommended dual element fuse three phase 4 hp 460 V 52 FLA - CORRECT ANSWER
-100A fuse
Effective power factor correction method - CORRECT ANSWER -capacitors installation
EOL is - CORRECT ANSWER -End of line resistor
Three initiation devices for fire alarm - CORRECT ANSWER -smoke, heat, beam detectors
with correct answers | RATED A+
What type of transformer 120 V center underground 240 V - CORRECT ANSWER -Wye
Increase power factor decrease electricity by large inductive load - CORRECT ANSWER -capacitor
Coil winding on load is called - CORRECT ANSWER -secondary
Minimum fire rating for transformer - CORRECT ANSWER -3 hours
Synchronize speed of induction, determined by - CORRECT ANSWER -frequency
One of three factors cause three phases to rotate - CORRECT ANSWER -voltage are 120° out of
phase
feeder serving motor 5, 10, 15 FLA minimum ampacity - CORRECT ANSWER -33.75
maximum recommended dual element fuse three phase 4 hp 460 V 52 FLA - CORRECT ANSWER
-100A fuse
Effective power factor correction method - CORRECT ANSWER -capacitors installation
EOL is - CORRECT ANSWER -End of line resistor
Three initiation devices for fire alarm - CORRECT ANSWER -smoke, heat, beam detectors
