MES - QUIZ 1

Onboards ships, what voltage level is considered low voltage?

• below 1000V

• below 2000V

• 3.3kV

• 6.6kV

What is the typical low voltage level used on ships?

• 440VAC , 3 phase, 60 Hz

• 3.3kV, 3 phase, 60 Hz

• 440VDC, 3 phase, 60 Hz

• 220VAC, 1 phase, 50 Hz

This part of the electrical system supplies bulk power to the section boards, motor starter groups, distribution boards, transformers

• switchboard

• distribution boards

• motor control panel

• transformers

What is the device shown in the figure?

• busbars

• HV cables

• electrical bus

• electrical wire

What are the devices in the figure shown called?

• disconnect switches

• circuit breakers

• contactors

• relays

Devices that protect the circuits from short-circuit fault

• circuit breakers

• overload relays

• disconnect switches

• circuit protectors

Part of the electrical system that distributes electrical power feeds from the switchboard/section board into subsidiary circuits

• switchboard

• distribution boards

• motor control starter

• section boards

Which of the following is considered a full-voltage starting technique?

• DOL Starter

• Wye Delta Starter

• soft starter

• autotransformer

DOL Starters is a motor starting technique used for motors with sizes _____________

• 5HP and below

• above 5HP

• 10HP and below

• above 20HP

Which of the following is an advantage of using YD Starter over Soft starter?

• provides a smooth, stepless acceleration

• simple and cheap

• easy to wire

• solid-state and has no miving parts