REVIEW QUIZ- SET 4_ ELC 302

What is the standard frequency of AC power in most industrial systems?

• 50 Hz

• 60 Hz

• 100 Hz

• 75 Hz

What is the minimum size of grounding electrode conductor for a 100A service using copper?

• 6.0 mm²

• 8.0 mm²

• 10.0 mm²

• 16.0 mm²

What is the standard supply voltage for three-phase industrial load in the Philippines?

• 220V

• 230V

• 240V

• 380V

What type of protection does a fuse provide?

• Overcurrent only

• Overvoltage

• Under voltage

• Ground fault

What is the most common wire insulation for conduit wiring systems?

• NM

• THHN

• TW

• UF

What is the minimum service entrance conductor size for a 60A service using copper?

• 5.5 mm²

• 8.0 mm²

• 14.0 mm²

• 22.0 mm²

What is the common Philippine Electrical Code (PEC) clearance between panelboards and walls or equipment in front?

• 750 mm

• 900 mm

• 1200 mm

• 1500 mm

What tool is used to thread metal conduit?

• Bender

• Cutter

• Reamer

• Die set

What is the purpose of a magnetic starter?

• Start single-phase motors

• Automatically cut off power

• Protect and control motor starting

• Increase motor efficiency

What type of motor is most commonly used in industrial applications?

• DC shunt motor

• Synchronous motor

• Induction motor

• Series motor