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Which of the following is the primary factor determining the current carrying capacity (throughput) of a wire or cable?

• The type of insulation surrounding the core.
• The length of the wire.
• The material of the metal core.
• The cross-sectional area of the metal core
• The number of strands in a multi-core conductor.

Which of the following is NOT a reason why control cables are grounded

• To protect equipment from lightning strikes.
• To prevent static electricity build-up.
• To improve the efficiency of the equipment
• To protect against short circuits.
• To shield against interference from radio transmitting devices.

Which type of interference is transmitted through capacitances between different parts of a cable?

• Conductive interference
• Capacitive interference
• Static interference
• Inductive interference
• Radiated interference

Which type of interference is NOT considered a threat to cables?

• Conductive interference
• Capacitive interference
• Static interference
• Inductive interference
• Radiated interference

What is the primary function of the single ceiling frame described in the text?

• To support and secure trays to the ceiling.
• To provide electrical wiring for ceiling lights.
• To create a decorative feature on the ceiling.
• To house air conditioning vents.
• To support structural beams in the ceiling.

What is the primary purpose of fittings in a pipeline system?

• To regulate the flow of liquid or gas through the pipeline.
• To prevent leaks and maintain pressure within the pipeline.
• To connect different sections of the pipeline together.
• To control the direction of flow in the pipeline.
• To filter impurities from the liquid or gas flowing through the pipeline.

Which of the following is NOT a common type of conductor material?

• Copper
• Aluminum
• Silver
• Plastic
• Gold

What is the primary purpose of cable trays?

• To provide structural support for ceilings and walls.
• To protect cables from physical damage and environmental hazards.
• To distribute electrical power to individual appliances.
• To facilitate the routing and management of cables.
• To connect different types of cables together.

Which of the following is NOT a type of fastener commonly used with cable trays?

• Pins
• Clamps
• Lugs
• Fittings
• Switches

What is the primary function of a cable entry (gland)?

• To connect different types of cables together.
• To provide a waterproof seal for cables entering an enclosure.
• To protect cables from electrical shocks.
• To control the flow of electricity through cables.
• To distribute electrical power to multiple outlets.