GAS CFESA PRACTICE TEST ACT UAL

GAS CFESA PRACTICE TEST ACT UAL

WITH 100 QUESTIONS AND CORRECT

ANSWERS | ALREADY GRADED A+ |

GUARANTEED PASS | GAS CFESA FINAL

LATEST VERSION [BRAND NEW!!]

Measuring static gas pressure will tell you if you have sufficient gas ______ to meet the required nameplate data.

• No load pressure
• Volume
• Pressure and volume
• Gas flow - ANSWER- A

A running pressure measurement will tell you if you have sufficient gas _______ to allow the gas fired equipment to operate properly.

• No load pressure
• Volume
• Pressure and volume
• Gas flow - ANSWER- C
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The minimum incoming gas pressure, before a gas pressure regulator, must be

_______.

• The operating pressure rating on the equipment data plate
• Determines by the utility company
• At least 1 in w.c. above the required operating pressure
• At least 5 in w.c. above the required operating pressure - ANSWER- C

To properly take a gas pressure reading on a piece of gas fired equipment all of the burners ___?

• Should be turned off
• Must be clean
• Must be set to a bypass flame height
• Must be turned full on - ANSWER- D

What is a Manometer and in what units is it calibrated?

• A pressure gauge calibrated in psi
• A pressure testing instrument calibrated in ft. w.c.
• A pressure testing instrument calibrated in inches w.c.
• A glass tube filled with alcohol to measure gas pressure in psi - ANSWER- C

An orifice opening in a natural gas orifice is _____ an orifice opening in an LP orifice of the same

rating:

• Smaller than
• Same as
• Larger than 2 / 4

• Varies by manufacturer - ANSWER- C

Clem is out servicing a special processing oven connected to natural gas, and using a hot surface glow coil ignitor. The customer claims that the oven does not heat up very long before it cuts out. Clem has checked the gas pressure under load, the voltage under load, the polarity of the lines, the amp draw of the glow coil, and after removing the glow coil checked its resistance which seemed OK. What did Clem do wrong?

• The voltage needed to be checked using only a digital voltmeter because of the

electronics in the circuit

• The gas pressure also needed to be taken without a load
• The polarity could not have had anything to do with the problem
• The glow coil needed to be homed out while it was hot to show up any possible

cracks in the ceramic - ANSWER- C

Joe's diner has a millivolt-operated gas-fired deep fryer. The pilot goes out from time to time.Sally tech has taken the following reading from the fryer with her meter connected under load.Thermopile output 300 MV with the fryer operating at 350* degrees F. There is no apparent makeup or exhaust air problems. The most likely problem is ______.

• A thermopile is breaking down 3 / 4

• The gas valve magnet is breaking down
• The pilot flame is to high
• The limit thermostat is opening and prematurely breaking the circuit through

the thermopile - ANSWER- A

A Keating fryer has a pilot valve that is locked into the circuit through a mercury vapor switch.The pilot will not stay lit when the momentary switch is released indicating that the mercury switch contacts are not closing. Before changing the switch Joe should do which of the following?

• Make sure that sensor is in the outer most part of the pilot flame
• Make sure that the tip of the sensor is being heated cherry red by the pilot flame
• Check to ensure that the gas pressure is not too low
• Make sure that the sensor is positioned away from the direct pilot flames so that

it does not overheat - ANSWER- B

The purpose of a draft hood/draft diverter is_______?

• To prevent drafts from entering the burner compartment that comes from the

power cent hoods.

• To prevent the combustion chamber from overheating, and allowing air to come

down the vent pipe into the room.

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