HVAC JOURNEYMAN ACTUAL
EXAMINATION TEST 250 SOLVED
QUESTIONS WITH VERIFIED ANSWERS
FULL SOLUTION
⩥ B- someone was watch for flames.
Answer: We're cutting or welding is done near walls, partitions ceilings,
or roofs of combustible construction
A- fire, resistant shields or guards shall be provided to prevent ignition
B- someone was watch for flames
C- the fire department must be alerted
D- threatened areas shall be coded with carbon tetrachloride or a similar
flame retardant
⩥ D- starve.
Answer: What is the effect on the evaporator when the superheat of a
system raises?
A- flood
B- charge
C- heat
D- starve
,⩥ A- 1000°F (IFGC - 202).
Answer: What is the minimum melting temperature for brazing
material?
A- 1000°F
B- 600°F
C- 800°F
D- 1200°F
⩥ C- dew point.
Answer: The __ is the temperature below which water vapor in the air
will start to condensate
A- wet bulb point
B- dry bulb point
C- dew point
D- sensible point
⩥ B- 15 (IMC - 603.3).
Answer: Ducts shall be classified based on the maximum operation
pressure of the duct at pressures of positive or negative of all, except
which of the following from a water column.
A- 1
B- 15
C- 10
,D- 0.5
⩥ D- 40 (IMC - 302.3.3).
Answer: A Hole is board into a wood stud its diameter cannot be more
than __ percent of the stud.
A- 25
B- 75
C- 60
D- 40
⩥ A- 187 V.
Answer: The starting running voltage used on a 208 V motor is
A- 187 V
B- 228 V
C- 175 V
D- 208 V
⩥ B- 10 feet (IMC - 304.11).
Answer: A technician is installing an electrical power to plants. A guard
rail will be installed later on international mechanical code must be
implemented. The roof is 8 foot above the grade below what would be
the least distance between the appliance in the roof edge?
A- 8 feet
, B- 10 feet
C- 6 feet
D- 4 feet
⩥ A- oils that react chemically with refrigerant.
Answer: What is a technician you are responsible to select and to handle
refrigerants from the list below name the type of refrigerant oils you
must avoid
A- oils that react, chemically with refrigerant
B- oils that are dry and moisture free
C- oils that are fluid at low temperature
D- oils that are stable at high temperature
⩥ A- interrupted (IMC - 604.8).
Answer: During inspection duct linings at the area of operation of a fire
damper, we're not approved to pass next inspection. The duct linings
must be.
A- interrupted
B- cut back 4 inches
C- fireproofed
D- doubled
⩥ C- 3 psig (IFGC - 406.4.1).
EXAMINATION TEST 250 SOLVED
QUESTIONS WITH VERIFIED ANSWERS
FULL SOLUTION
⩥ B- someone was watch for flames.
Answer: We're cutting or welding is done near walls, partitions ceilings,
or roofs of combustible construction
A- fire, resistant shields or guards shall be provided to prevent ignition
B- someone was watch for flames
C- the fire department must be alerted
D- threatened areas shall be coded with carbon tetrachloride or a similar
flame retardant
⩥ D- starve.
Answer: What is the effect on the evaporator when the superheat of a
system raises?
A- flood
B- charge
C- heat
D- starve
,⩥ A- 1000°F (IFGC - 202).
Answer: What is the minimum melting temperature for brazing
material?
A- 1000°F
B- 600°F
C- 800°F
D- 1200°F
⩥ C- dew point.
Answer: The __ is the temperature below which water vapor in the air
will start to condensate
A- wet bulb point
B- dry bulb point
C- dew point
D- sensible point
⩥ B- 15 (IMC - 603.3).
Answer: Ducts shall be classified based on the maximum operation
pressure of the duct at pressures of positive or negative of all, except
which of the following from a water column.
A- 1
B- 15
C- 10
,D- 0.5
⩥ D- 40 (IMC - 302.3.3).
Answer: A Hole is board into a wood stud its diameter cannot be more
than __ percent of the stud.
A- 25
B- 75
C- 60
D- 40
⩥ A- 187 V.
Answer: The starting running voltage used on a 208 V motor is
A- 187 V
B- 228 V
C- 175 V
D- 208 V
⩥ B- 10 feet (IMC - 304.11).
Answer: A technician is installing an electrical power to plants. A guard
rail will be installed later on international mechanical code must be
implemented. The roof is 8 foot above the grade below what would be
the least distance between the appliance in the roof edge?
A- 8 feet
, B- 10 feet
C- 6 feet
D- 4 feet
⩥ A- oils that react chemically with refrigerant.
Answer: What is a technician you are responsible to select and to handle
refrigerants from the list below name the type of refrigerant oils you
must avoid
A- oils that react, chemically with refrigerant
B- oils that are dry and moisture free
C- oils that are fluid at low temperature
D- oils that are stable at high temperature
⩥ A- interrupted (IMC - 604.8).
Answer: During inspection duct linings at the area of operation of a fire
damper, we're not approved to pass next inspection. The duct linings
must be.
A- interrupted
B- cut back 4 inches
C- fireproofed
D- doubled
⩥ C- 3 psig (IFGC - 406.4.1).
