NJ Blue Seal FINAL EXAM ACTUAL 2027 ACCURATE
QUESTIONS WITH CORRECT DETAILED ANSWERS
VERIFIED ANSWERS
Formula for finding Horsepower in a Kilowatt - 1.341 x kW = HP
If you have a 500 k/W generator, what is the HP? - 1.341 x 500 = 670.5
What is the formula for finding the Factor of Evaporation ? - FE Hs -(Tfw - 32)/970.3
What chemicals cause hard scale in a boiler? - Calcium carbonate and magnesium
carbonate
What is the critical speed of a turbine? - The speed at which it vibrates the most
An intercooler is found: - In a two stage air compressor
What protects a turbine shaft from bowing? - A turning gear
When do you lubricate a turbine with oil? - Before starting it up
What is the formula used to calculate Btu's in a pound of fuel? - Btu's/lb. fuel=
17,687(57.7 x API) Plus (+) then Times (x)
What suction performance factor is a characteristic of the pump and varies with pump
design, pump size and operating conditions? - NPSH
Licenses can be renewed ____ days before expiration. – 60
Why must alternators run at a constant speed? - In order to maintain frequency
, What does h represent? - The sum of latent heat and sensible heat
If your cold water pump discharge pressure gauge indicated 346 psi, what would be the
head in feet? - 346 x 2.31= 800psi
To be eligible for 1-C Blue, you must have: - High Pressure license & 6 mos. operating
over 500 horsepower boilers
The formula for Torque - T = HP x 5252/ RPM
The formula for Frequency - F=N x RPM/120
1.34 kilowatt = - 1 HP
33,475 Btu's= - 1 Boiler HP
2545 Btu's= - 1 Horsepower Hour
970.3 Btu's = - Latent Heat of Evaporation
3414 Btu's= - 1 Kilowatt Hour
1 Btu= - 778 ft. lbs
What is the formula for finding Heating Surface? - Hs = Dia x 3.1416 × LxN/144
L = length in inches
N=number of tubes
Dia=diameter of tubes
Turbine that has high-pressure steam directed straight at the turbine blades is an: -
Impulse Turbine
A 20,700 lbs. per hour boiler equals ____ horsepower. - 20,700/34.5= 600 H.P
A mechanical HP is equal to: - 33,000 ft. lbs. per minute
A boiler with 5,021,250 Btu's would equal ____ HP - 150 hp
To convert Btu's to ft. Ibs., muiltiply the Btu's by - 778
QUESTIONS WITH CORRECT DETAILED ANSWERS
VERIFIED ANSWERS
Formula for finding Horsepower in a Kilowatt - 1.341 x kW = HP
If you have a 500 k/W generator, what is the HP? - 1.341 x 500 = 670.5
What is the formula for finding the Factor of Evaporation ? - FE Hs -(Tfw - 32)/970.3
What chemicals cause hard scale in a boiler? - Calcium carbonate and magnesium
carbonate
What is the critical speed of a turbine? - The speed at which it vibrates the most
An intercooler is found: - In a two stage air compressor
What protects a turbine shaft from bowing? - A turning gear
When do you lubricate a turbine with oil? - Before starting it up
What is the formula used to calculate Btu's in a pound of fuel? - Btu's/lb. fuel=
17,687(57.7 x API) Plus (+) then Times (x)
What suction performance factor is a characteristic of the pump and varies with pump
design, pump size and operating conditions? - NPSH
Licenses can be renewed ____ days before expiration. – 60
Why must alternators run at a constant speed? - In order to maintain frequency
, What does h represent? - The sum of latent heat and sensible heat
If your cold water pump discharge pressure gauge indicated 346 psi, what would be the
head in feet? - 346 x 2.31= 800psi
To be eligible for 1-C Blue, you must have: - High Pressure license & 6 mos. operating
over 500 horsepower boilers
The formula for Torque - T = HP x 5252/ RPM
The formula for Frequency - F=N x RPM/120
1.34 kilowatt = - 1 HP
33,475 Btu's= - 1 Boiler HP
2545 Btu's= - 1 Horsepower Hour
970.3 Btu's = - Latent Heat of Evaporation
3414 Btu's= - 1 Kilowatt Hour
1 Btu= - 778 ft. lbs
What is the formula for finding Heating Surface? - Hs = Dia x 3.1416 × LxN/144
L = length in inches
N=number of tubes
Dia=diameter of tubes
Turbine that has high-pressure steam directed straight at the turbine blades is an: -
Impulse Turbine
A 20,700 lbs. per hour boiler equals ____ horsepower. - 20,700/34.5= 600 H.P
A mechanical HP is equal to: - 33,000 ft. lbs. per minute
A boiler with 5,021,250 Btu's would equal ____ HP - 150 hp
To convert Btu's to ft. Ibs., muiltiply the Btu's by - 778
