GRADE 1 MECHANICAL
TECHNOLOGIST STUDY GUIDE
CORRECT 100%
Which welding process is most commonly used for small pipe maintenance welding? -
ANSWEROxyacetylene gas welding
What is the proper definition of an engine? - ANSWERIt is a machine designed to
convert energy into useful mechanical motion
What is wet stacking and how can it be prevented? - ANSWERIt is unburned fuel
collecting in the exhaust due to light or no load conditions.
To check flywheel face runout, where should the dial indicator be positioned? -
ANSWERThe base on the bell housing and pointer on the flywheel face.
Which of the following valves is unsuitable for high-pressure flow? - ANSWERA needle
valve
A sodium hypochlorite tank's full working capacity is 23,000 gallons. Its current level is
at 1,200 gallons. How many gallons does the delivery driver need to add to bring it to
70% capacity? - ANSWERSolution:
23,000 gallons max capacity x 70% desired capacity = 16,100 gallons desired.
16,100 gallons desired - 1,200 gallons current level
14,900 gallons needed to add
What is the result if 6/8 " is converted to decimal form? - ANSWER = 0.75 or .75
What is the conversion of 212 degrees Fahrenheit into Celsius?
What is the conversion of 100 degrees Celsius into Fahrenheit? - ANSWERC° = (F° -
32)/9 x 5 •Begin by subtracting 32 from the Fahrenheit number.
•Divide the answer by 9.
•Then multiply that answer by 5.
If a 38-tooth gear running at 360 rpm is driving another gear at 144 rpm, what is the
number of teeth on the driven gear? - ANSWERSolution: driver Gear x Driver
RPM=Driven Gear x Driven RPM
38 x 360 = N x 144
13,680 = 144N
13, = 144N / 144
TECHNOLOGIST STUDY GUIDE
CORRECT 100%
Which welding process is most commonly used for small pipe maintenance welding? -
ANSWEROxyacetylene gas welding
What is the proper definition of an engine? - ANSWERIt is a machine designed to
convert energy into useful mechanical motion
What is wet stacking and how can it be prevented? - ANSWERIt is unburned fuel
collecting in the exhaust due to light or no load conditions.
To check flywheel face runout, where should the dial indicator be positioned? -
ANSWERThe base on the bell housing and pointer on the flywheel face.
Which of the following valves is unsuitable for high-pressure flow? - ANSWERA needle
valve
A sodium hypochlorite tank's full working capacity is 23,000 gallons. Its current level is
at 1,200 gallons. How many gallons does the delivery driver need to add to bring it to
70% capacity? - ANSWERSolution:
23,000 gallons max capacity x 70% desired capacity = 16,100 gallons desired.
16,100 gallons desired - 1,200 gallons current level
14,900 gallons needed to add
What is the result if 6/8 " is converted to decimal form? - ANSWER = 0.75 or .75
What is the conversion of 212 degrees Fahrenheit into Celsius?
What is the conversion of 100 degrees Celsius into Fahrenheit? - ANSWERC° = (F° -
32)/9 x 5 •Begin by subtracting 32 from the Fahrenheit number.
•Divide the answer by 9.
•Then multiply that answer by 5.
If a 38-tooth gear running at 360 rpm is driving another gear at 144 rpm, what is the
number of teeth on the driven gear? - ANSWERSolution: driver Gear x Driver
RPM=Driven Gear x Driven RPM
38 x 360 = N x 144
13,680 = 144N
13, = 144N / 144
