Untitled Lesson

Electrical installations

By Matej Mokricki

Multiple Choice

What is RCD?

• Residual Current Device
• Regular Current Detector
• Reactive Current Device
• Residual Circuit Device

Multiple Choice

What is MCB?

• Miniature Circuit Breaker
• Micro Circuit Breaker
• Multi Circuit Breaker
• Main Circuit Breaker

Multiple Choice

What means MCCB?

• Miniature Case Circuit Breaker
• Molded Case Circuit Breaker
• Molded Case Control Breaker
• Molded Circuit Control Box

Multiple Choice

What means RCCB?

• Residual Current Conductor Breaker
• Residual Current Circuit Breaker
• Residual Current Circuit Board
• Residual Current Control Box

Multiple Choice

What menas AC?

• Alternating Current
• Direct Current
• Alternating Circuit
• Alternating Charge

Multiple Choice

What means DC?

• Direct Current

• Direct Connection
• Data Center
• Digital Circuit
• Dual Circuit

Multiple Choice

What are Electrical Installations?

• Electrical installations are solely for telecommunications systems.
• Electrical installations refer to the generation of electricity.
• Electrical installations are systems and components used to distribute electrical power in buildings.
• Electrical installations are only used for outdoor lighting.

Multiple Choice

Ohm's Law?

• U = R / I

• I = U + R

• R = U - I

• U = I * R

Multiple Choice

Electric power equation?

• P = I / U

• P = U + I

• P = U - I

• P = U × I

Multiple Choice

Electrical energy equation?

• We = V × Q

• We = m × g × h

• We = I × R

• We = P × t

Multiple Choice

What means conductor cross-section?

• The area of a conductor's cross-section, indicating its capacity to carry electrical current.
• The color of a conductor's insulation.
• The weight of a conductor's material.
• The length of a conductor's wire.

Multiple Choice

Which is correct IEC standard for electrical installations?

• IEC 60364
• IEC 61000
• IEC 60245
• IEC 60320

Multiple Select

Dangerous voltages?

• 120 VAC

• 24 VAC

• 230 VAC

• 60 VAC

Multiple Choice

What means SIST?

• Slovenian Institute for Standardization

• Systematic Instructional Support Training
• Systematic Instructional Support Technology
• Systematic Instructional Support Task

Multiple Choice

International SI units?

• The seven base SI units are meter, kilogram, second, ampere, kelvin, mole, and candela.
• yard, ounce, day, watt, rankine, quark, and foot
• inch, pound, minute, joule, fahrenheit, atom, and lux
• liter, gram, hour, volt, celsius, particle, and lumen

Multiple Choice

SELV voltage?

• Below 100V AC or 240V DC
• Above 50V AC or 120V DC
• Only applicable in industrial settings
• Safety Extra Low Voltage (SELV) is typically below 50V AC or 120V DC.

Multiple Choice

PELV voltage?

• 0 to 10 volts AC
• 0 to 50 volts AC or 0 to 120 volts DC
• 50 to 100 volts DC
• 0 to 25 volts AC

Multiple Choice

What means PRCD?

• Personal Residual Current Device Unit
• Public Residual Current Device
• Personal Reactive Current Device
• Portable Residual Current Device

Multiple Choice

Frequency of AC outlet voltage in EU?

• 50 Hz
• 60 Hz
• 40 Hz
• 30 Hz