Welcome to the website where you can find answers for the Computer Based Test (CBT) also known as Crew Evaluation System (CES) on the subject «HT Voltage». This site will help you as a marine specialist improve your knowledge with the help of open information, where you can find questions as well as answers for them. CES/CBT based on practical information and marine specialists experience.
CES & CBT tests developed for evaluating seaman basic knowledge by Seagull Company (rebranded as «OTG»), is an evaluating online-tool, used for revealing any professional preparation needed in specific fields of knowledge, defined by STCW.
CES tests have proven themselves as good tools for the selection and recruitment process, as well as advancing the level of knowledge of the current officers and crew. Ocean Technologies Group use various subjects for question creation, which includes:
- Crowd and Crisis Management;
- Integrated Navigation System (INS);
- Ballast water management;
- Handling and Stowage;
- Vessel operation management and safety;
- Marine engineering;
- Maintenance and repair, etc.
Current test contains Seagull CES questions on the subject «HT Voltage». These questions can be used to test the competence of a person capable of handling high voltage electrical equipment on a ship. Under the power plant understand the totality of a number of mechanisms, machines, devices and devices. The power plant includes prime movers, generators, the main switchboard with equipment mounted on it and various auxiliary devices. Typically, power stations on ships are located in the engine rooms. On ships of the navy, a current of 6, 12, 24, 110, 220 V with direct current and 6, 12, 24, 127, 220, 380 V with alternating current is used. For power networks, voltages up to 380 V for alternating current and up to 220 V for direct current are allowed. For lighting networks, regardless of the type of current, a voltage of 220 or 110/127 Vis used and for low-voltage lighting – 6, 12 and 24 V. At the same time, for tankers, the voltage of the lighting network is not used above 110 V at direct current and 127 V at alternating current.
«HT Voltage» subject includes theoretical and practical information about safety working with electrical equipment. Knowledge of this information directly indicates the competence of the employee holding the relevant position on the ship. The use of the highest possible voltage gives a tangible gain in the mass and cost of the ship’s cable network. Therefore, on large ships, where there are long lines with powerful consumers at the end, the maximum possible voltage is usually chosen, equal to 380 V for alternating current and 220 V for direct current. However, it should be borne in mind that an increase in voltage is associated with an increase in the likelihood of electric shock to people.
This page contains answers to Seagull CES CBT (Crew Evaluation System/Computer Based Test) test about HT Voltage, and serve as a database of questions and answers, using which seafarer can prepare to exams for getting certificate of competence, or just to challenge yourself with knowledge in this theme.
CBT CD 0230 – High Voltage, Fundamentals.pdf
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Amount of questions: 56.
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Test about High Voltage, Fundamentals