11-55.
Which of the following components of the
electrical system are placed above the
waterline whenever practical?
1. Emergency
generators
2.
Ship's service and emergency
generators 3.
Emergency generators and switch-
boards 4.
Ship's service and emergency
switchboards
11-56. A ship's casualty power system
is designed to provide enough emergency
electric power for restoring the
1. services
that are vital to the ship's
survival
2.
ship to near-normal operating
efficiency
3.
ship to normal operating efficiency
4. watertight
boundaries and for making temporary
repairs 11-57.
You should be able to find your way
quickly to sources of casualty power in
the event of damage to the regular power
system. Where
can this source of power be located?
1.
In a special housing switchboard
2. At the
ship's central switchboard 3.
At each emergency switchboard
4.
At each ship's service switchboard
and each emergency switchboard
11-58. What
component is installed on power panels
specifically for handling casualty
power?
1.
Bus bars
2.
Transformers
3.
Power terminals
4. Circuit breakers
11-59. The
circuits that transmit a.c. casualty
power to equipment designated to receive
it consist chiefly of which of the
following types of cable?
1. Portable
3-conductor 2.
Vertical runs of insulated
3.
Permanently installed armored
4.
Horizontal runs of 2-conductor
11-60. On
larger ships, the a.c. casualty power
system generally consists of 1.
one horizontal run, located inside
the deck house
2. two horizontal runs,
located on the second deck
3. two
horizontal runs, located inside the
deck house 4.
one horizontal run, located on the
second deck
11-61. Each riser terminal installed in
a casualty power circuit provides a
connection point for
1. two,
3-lead portable cables 2.
two, 4-lead portable cables
3. three,
3-lead portable cables
4.
three, 4-lead portable cables
11-62. The
riser terminals of a casualty power
system can be distinguished from the
bulkhead terminals by which of the
following characteristics?
1.
The horizontal runs of the portable
cable that connect the riser
terminals to the other riser
terminals
2.
The horizontal runs of the portable
cable that connect the bulkheads to
the other bulkhead terminals
3.
The vertical runs of the permanently
installed armored cable that connect
the riser terminals to the other
riser terminals
4. The vertical runs of the
permanently installed armored cable
that connect the bulkhead
terminals to the other bulkhead
terminals 11-63.
Phase identification of cable conductors
is by color and by servings of cotton
cord. Which of the following markings
identifies a phase "B" cable?
1. White and
two servings 2.
Grey and three servings
3.
Red and three servings
4.
Black and one serving
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