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1. Battery starter systems used with generator sets are usually ________.

12V or 28V

10V or 20V

14V or 22V

12V or 24V

Question 1 of 25

2. Systems installed to protect loads such as communications, ventilation, or lighting systems that, when stopped, could create hazards or hamper rescue or fire-fighting operations are known as ________.

life safety systems

emergency systems

legally required standby systems

essential systems

Question 2 of 25

3. When a lead-acid battery is being discharged ________.

water is consumed

sulfuric acid is produced

lead is consumed

sulfuric acid is consumed

Question 3 of 25

4. Sizing of a generator set for a particular application is ________.

typically done using manufacturer's software

detailed in NEC Article 701

achieved by referring to tables in local building codes

based on calculations using NFPA guidelines

Question 4 of 25

5. A single-conversion UPS system ________.

supplies AC power directly to critical loads through a series transformer

has excellent frequency stability

may achieve zero transfer time

has poor noise isolation from line to load

Question 5 of 25

6. Optional standby systems are covered in ________.

NEC Article 701

NEC Article 702

NEC Article 700

NEC Article 705

Question 6 of 25

7. Battery capacity can be determined by ________.

using a hydrometer

performing a load test

performing a float test

calculating electrolyte specific gravity

Question 7 of 25

8. In an AC generator, the field windings are energized by the ________.

rotor

exciter

armature

stator

Question 8 of 25

9. NEC Article 480 contains ________.

information on transfer switches

requirements governing storage batteries for emergency electrical systems

requirements for unit equipment

installation requirements for legally required standby electrical systems

Question 9 of 25

10. The AC generator consists of a rotor and a(n) ________.

field

exciter

stator

armature

Question 10 of 25

11. Overcharging a lead-acid battery will ________.

destroy the negative plate

extend battery life

destroy the positive plate

increase battery power

Question 11 of 25

12. Which of the following are defined by the NEC® as those systems intended to protect public or private facilities or property where life safety does not depend on the performance of the system?

Critical systems

Emergency systems

Optional standby systems

Nonessential systems

Question 12 of 25

13. Each patient bed location in a healthcare facility must be supplied by ________.

at least two branch circuits from the emergency system

one or more circuits from the normal electrical system and one or more from the emergency system

one circuit from the normal electrical system only

one circuit from the emergency system only

Question 13 of 25

14. The most common method of cooling standby generator sets is ________.

a mounted radiator with an engine-driven fan

compressed air systems

liquid-to-liquid heat exchangers

battery-powered systems

Question 14 of 25

15. Transfer switches are sized based on ________.

150% of the emergency load

the calculated continuous current

125% of the maximum critical load

80% of the generator capacity

Question 15 of 25

16. Do not run an engine generator set without a load for more than ________.

10 minutes

1 hour

5 minutes

15 minutes

Question 16 of 25

17. Which of the following commercial loads can be fed from a regular circuit rather than an emergency circuit?

Exit lights

Life safety systems

Fire alarm systems

Computer equipment

Question 17 of 25

18. For every 15° above 77°, the life of a lead-acid battery is ________.

increased by 20%

reduced by 50%

reduced by 20%

reduced by 15%

Question 18 of 25

19. An electronically controlled, solid-state power control system designed as an alternate source to provide regulated AC power to critical loads if the normal power system fails is commonly known as a(n) ________.

static uninterruptible power supply

static inverter

generator set

transfer switch system

Question 19 of 25

20. A storage battery must supply at least what percentage of the system voltage for the total load of circuits supplying legally required standby power?

87-1/2%

100%

33-1/3%

50%

Question 20 of 25

21. Which of the following is a requirement for generator sets used in legally required standby systems?

The generator must carry at least 50% of the load.

A means of manual starting must be provided.

A means must be provided for automatic starting of the generator set(s).

The standby system generator set must be started within 30 minutes after a power failure.

Question 21 of 25

22. Which type of engine-driven AC generator is commonly used as a standby system because they have a longer life and require less maintenance?

Liquid-cooled

Diesel-powered

Air-cooled

LP gas-powered

Question 22 of 25

23. NEC Article 518 contains ________.

information on the installation of emergency systems

requirements for places of assembly

information on transfer switches

requirements for unit equipment

Question 23 of 25

24. In lower-power UPS applications, the double-conversion UPS typically requires a DC power supply how many times larger than the full-load rating of the UPS?

0.30

0.75

3.00

1.50

Question 24 of 25

25. The nominal open circuit voltage of a lead-acid cell is _____.

2.5V

2.0V

1.0V

1.3V

Question 25 of 25

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