Extras

Question 1

_______coal is a coal that is ground into a fine powder

Answer 1

Pulverized

Question 2

_______coal is a hard coal with a high luster that yields a small amount of volatile matter when is burned

Answer 2

Anthracite

Question 3

_______coal is a soft coal that yields a large amount of volatile when is burns

Answer 3

Bituminous

Question 4

The_____is the full lengh of a coal stoker

Answer 4

Retort

Question 5

A______draft fan is a fan located before the furnace that supplies the necessary air and air flow for the combustion proces

Answer 5

Forced

Question 6

______is the burning of fuel on a grate at a rate that only sustain the ignition

Answer 6

Banking

Question 7

The______is the location in a coal stoker where the coal is burned

Answer 7

Moving grate zone

Question 8

The_____is the location in a coal stoker where any remaining coal is burned before discharging to the ash pit

Answer 8

Dumping grate zone

Question 9

A_______control is a control that regulates fuel supply, air supply, air-to-fuel ratio and removal of gases of combustion in a boiler

Answer 9

Combustion control

Question 10

_______is the amount of fuel the burner is capable of burning in a giving unit of time

Answer 10

Firing rate

Question 11

An______is an air pressure-actuated switch that closes after proving sufficient pressure of combustion air from the forced draft

Answer 11

Air proving switch

Question 12

_____is the condition where a flame teavels upwind and into the burner assambly

Answer 12

Flashback

Question 13

A______is a control that functions as the mastermind of the burner control system to control the firing cycle

Answer 13

Programmer

Question 14

_____is the period of time after startup

Answer 14

Prepurge

Question 15

_______is the period of time during which the pilot and main burner must be ignited

Answer 15

Ignition trials

Question 16

The pilot_______period is the period during which the programmer permits the pilot valve to be open and the flame detector is required to detect the pilot flame

Answer 16

Flame-establishing

Question 17

A______is a safety device that senses if the pilot light and/or main flame are lit

Answer 17

Flame scanner

Question 18

A_____is the sensing device in a flame scanner used to sense the pilot and main flame in the burner

Answer 18

Flame sensor

Question 19

A_____is a flame sensor that senses visible light from the burner

Answer 19

Photocell sensor

Question 20

_________is a flame sensor that senses light frequencies that are higher than those to the eye

Answer 20

Ultraviolet sensor

Question 21

An______is a flame sensor that senses light frequencies that are lower than those visible to the eye

Answer 21

Infrared sensor

Question 22

______ _____is the ability of a burner to burn fuel as indicated by the amount of unburned fuel and excess air in the gases of combustion

Answer 22

Combustion efficiency