A pulsating sound coming from an oil furnace indicates _____.

a. the flame is touching the combustion chamber
b. a defective blower
c. under-firing
d. soot buildup on the heat exchanger


a. the flame is touching the combustion chamber

Trades & Technology

You might also like to view...

El aislante de fibra de vidrio para tuberías es _____.

a. rígido b. celular c. semi-rígido d. granular

Trades & Technology

____ electrodes are designed to be used with AC or DCEP reverse polarity and have an organic-based flux.

A. E6010 B. E6011 C. E6013 D. E7014

Trades & Technology

Design a CADD workstation including but not limited to a computer, monitor, keyboard, and pointing device. Take measurements of existing computer equipment and use vendor catalogs to develop your design. Draw views of the complete workstation, including the table and computer equipment.

Follow the specific instructions to complete each problem. What will be an ideal response?

Trades & Technology

Which method of blending ethanol with gasoline is the most accurate?

A) Splash B) In-line C) Sequential D) All of the above

Trades & Technology