PEMBUMIAN ( KEUTAMAAN & KEPERLUAN )

Multiple Choice

What is it when the case of an electrical appliance is connected to the earth wire (for safety)?

• earthed

• Double insulated

• trip switch

• Potential divider

• Light Emitting Diode (LED)

Multiple Choice

What are the effects of electric shock on the human nervous system?

• Increased heart rate

• Loss of consciousness

• Muscle spasms

• Nausea

Multiple Choice

Which factor determines the outcome of an electrical shock?

• The amount of current

• Which phase is involved

• The raceway system

• The size of the electrical equipment being used

Multiple Choice

What is the purpose of connecting electrical systems to the ground according to the safety regulations?

• To prevent electrical shocks

• To improve energy efficiency

• To reduce power consumption

• To enhance signal strength

Multiple Choice

What are the regulations regarding grounding in electrical installations according to the 1994 Electrical Supply Regulations?

• Only certain types of pipes can be grounded

• All electrical appliances must be grounded

• Grounding is optional for domestic appliances

• Grounding must be done effectively

Multiple Choice

What is the relationship between current (arus) and the risk of electric shock in humans?

• Higher current increases risk

• Lower current increases risk

• Current has no effect

• Current only affects animals

Multiple Choice

What are the effects of different current values on the human body as shown in the table?

• 1 ~ 4 mA: Normal

• 20 ~ 40 mA: Pain and breathing issues

• 50 ~ 100 mA: Can lead to death

• 10 ~ 15 mA: Loss of muscle control

Multiple Choice

What is the cause of electric shock as described in the image?

• Direct contact with a live wire

• Indirect contact with a live wire

• Touching a grounded object

• Using non-insulated tools

Multiple Choice

What is the definition of indirect contact in electrical terms?

• Direct contact with live components

• Electric shock from grounded conductors

• Touching non-conductive materials

• Using insulated tools

Multiple Choice

If you touch a charged object to the ground, what happens?

• It gains protons

• It neutralizes

• It gains neutrons

• It becomes more charged

Multiple Choice

What are the two types of potentials discussed in the image?

• Touch Potential

• Step Potential

• Voltage Potential

• Current Potential

Multiple Choice

What is the definition of 'potensi sentuh' as described in the text?

• Difference in voltage between two points

• The flow of electric current

• The resistance in a circuit

• The potential energy of an object

Multiple Choice

What is the potential difference between the equipment touched by the right hand and the ground?

• 2500V

• 5000V

• 7500V

• 10000V

Multiple Choice

Related to the force that causes electric charges to flow; measured in volts.

• voltage difference
• resistance
• electric current
• Ohm's law

Multiple Choice

What is the concept of step potential as described in the text?

• The difference in voltage between two points

• The risk of electric shock when stepping on damaged points

• The flow of current through the body

• The relationship between distance and voltage

Multiple Choice

What is the potential difference between point A and point B?

• 1000V

• 1500V

• 2000V

• 2500V

Multiple Choice

Why is electrical grounding necessary?

• To ensure safety during faults

• To increase electrical resistance

• To prevent electrical fires

• To reduce energy consumption

Multiple Choice

Why is it necessary to ground electrical systems?

• To prevent electrical shock

• To increase voltage levels

• To reduce energy consumption

• To improve system efficiency

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident