| 1. |
Several motors, each not exceeding 1 hp in rating, shall be permitted on a nominal 120-volt branch circuit protected at not over 20 amperes or a branch circuit of 600 volts, nominal, or less, protected at not over 15 amperes, if which of the following conditions are met.
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a)
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The full-load rating of each motor does not exceed 6 amperes
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b)
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The rating of the branch-circuit short-circuit and ground-fault protective device marked on any of the controllers is not exceeded.
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c)
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Individual overload protection conforms to Section 430-32.
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d)
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All of the above
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| 2. |
Where conductors are run in parallel in parallel raceways the grounding conductors shall be_______.
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a)
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run in parallel
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b)
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run in at least one raceway
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c)
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run in an isolated raceway
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d)
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run outside the raceways but secured to the raceway.
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| 3. |
Taps to brake coils of cranes and hoists shall be protected by _____.
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a)
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20 amperes circuit breaker
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b)
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15 ampere fuses
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c)
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10 ampere fuses
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d)
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Nothing. No protection is required.
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| 4. |
The ampere rating of the disconnecting means serving a hermetic refrigerant motor-compressor shall be ______ of the nameplate rated-load current or branch-circuit selection current, whichever is greater
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a)
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115 percent
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b)
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125 percent
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c)
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135 percent
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| 5. |
Underground wiring for bulk storage plants is permitted to be installed in _______
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a)
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threaded rigid metal conduit
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b)
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threaded steel intermediate metal conduit
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c)
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where buried under not less than 2 ft (610 mm) of cover, shall be permitted in rigid nonmetallic conduit or an approved cable
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d)
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All of the above
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| 6. |
Disregarding any exceptions the fixed wiring method for theatres that have an occupancy load of 100 persons or more shall be _______.
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a)
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Nonmetallic sheathed cable
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b)
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Electrical nonmetallic tubing
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c)
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The fixed wiring methods shall be metal raceways, flexible metal raceways, nonmetallic raceways encased in not less than 2 in. of concrete, Type MI, MC, or AC cable containing an insulated equipment grounding conductor.
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d)
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All of the above
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| 7. |
What is the minimum number of duplex receptacles required for each patient bed in the critical care area of a hospital.
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a)
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1
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b)
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2
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c)
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3
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| 8. |
When there is a power outage in a hospital and the automatic switching equipment is activated to emergency service what is the required time delay setting for re-establishing the normal service after normal service power is restored.
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a)
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Not more than 10 seconds
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b)
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30 seconds
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c)
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5 minutes
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d)
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15 minutes
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| 9. |
An operating room in a hospital where the use of non-flammable anesthetizing agents are used, the area is classified as a(n) _______ location.
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a)
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Class I, Division I
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b)
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Class I, Division 2
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c)
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non-hazardous location
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| 10. |
Splices and taps are permitted in wireways provided they are accessible and do not fill the wireway to more than _____ percent of the cross sectional area and are ________..
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a)
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50, accessible
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b)
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60, accessible
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c)
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75, accessible
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d)
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80, accessible
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| 11. |
Both metallic and nonmetallic wireways can be filled to 20 percent of their cross sectional area, but the following statement is true about their differences._
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a)
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No derating of over 3 current carrying conductors apply to nonmetallic wireways but not to metallic wireways.
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b)
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There is no derating of up to 30 current carrying conductors in metallic wireway but there is derating for over 3 current carrying conductors in a nonmetallic wireway.
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c)
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There is no derating for up to 30 current carrying conductors in metallic and nonmetallic wireways.
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| 12. |
Refer to the figure below. The current through R2 is _____ . (select the closest answer)
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a)
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2.7 amperes
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b)
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1.3 amperes
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c)
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5.7 amperes
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d)
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8.3 amperes
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| 13. |
Performance standard(s) that transfer equipment used in emergency systems shall meet is:
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a)
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Automatic transfer switches shall be electrically operated and mechanically held.
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b)
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Transfer equipment shall be designed and installed to prevent the inadvertent interconnection of normal and emergency sources of supply in any operation of the transfer equipment.
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c)
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Transfer equipment shall supply only emergency loads.
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d)
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All of the above
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| 14. |
In a run of underground rigid metal conduit from a gasoline dispenser to the service panelboard in a nonhazardous location a total of ____sealoffs are required.
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a)
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1
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b)
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2
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c)
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3
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d)
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4
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| 15. |
In general, direct burial cable rated above _____ volts shall be shielded.
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a)
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12,000
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b)
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5,000
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c)
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2,400
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d)
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2,000
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| 16. |
In a hospital general care area each patient bed location shall be provided with a minimum of ____ receptacles.
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a)
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1 duplex
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b)
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3 duplex or 6 single
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c)
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2 duplex or 4 single.
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d)
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4 duplex
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| 17. |
Where a surface-mounted fixture containing a ballast is to be installed on combustible low-density cellulose fiberboard, it shall be listed for this condition or shall be spaced not less than _______ in. from the surface of the fiberboard.
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a)
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1/4
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b)
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3/8
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c)
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1 1/2
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d)
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2
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| 18. |
What is the minimum size equipment bonding jumper required for a raceway containing a circuit protected at 60 amperes.
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a)
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No. 14
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b)
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No. 12
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c)
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No. 10
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d)
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No. 8
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| 19. |
An individual outlet with taps not over 18 inches long is connected to a 50 ampere circuit to supply a household kitchen wall-mounted oven. The tap conductor ampacity shall not be less than _____ amperes.
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a)
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50
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b)
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40
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c)
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30
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d)
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20
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| 20. |
Given an AC transformer and DC rectifier arc welder with a 60 percent duty cycle. The ampacity of the supply conductors shall be calculated by multiplying the nameplate current by a factor of _______.
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a)
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.78
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b)
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.84
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c)
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.89
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