CERTIFICATION PRACTICE SET ANSWERS FULL
SOLUTION
◉ What is the purpose of a visual field soil analysis?
Answer: Establish general soil classifications
◉ What is the correct order of subsurface soil exploration?
Answer: Boring, Sampling, Testing
◉ Fine-grained soils are soils finer than a _____________
Answer: No. 200 sieve
◉ On a Boring Log, where do you go to check the depths of the
described soils?
Answer: Left 2 columns
◉ Wood, Steel, and Rigid Insulation are all used for ____________
Answer: Concrete Formwork
◉ Deflection is a result of what type of stress?
,Answer: Bending stress
◉ Which of the following is a type of multiuse form?
Answer: Panel Forms
◉ Which of the following would be considered a dead load?
Answer: Formwork
◉ Which property of air is the best measure for latent heat?
Answer: Humidity Ratio
◉ If you have an air sample with a dry bulb temperature of 80*F and
an RH of 50%, what is its wet bulb temperature? [80*F on horizontal
axis, follow that up to 50% on curved axis, WB = diagonal line at
intersection of DB and RH]
Answer: 67*F
◉ If you have an air sample with a dry bulb temperature of 60*F and
an RH of 100%, what is its wet bulb temperature? [60*F on
horizontal axis, follow that up to 100% on curved axis, WB =
diagonal line at intersection of DB and RH]
Answer: 60*F
,◉ Using a psychrometric chart, if you have an air sample with a dry
bulb temperature of 60*F and a humidity ratio of 23.0 gr/lb, what is
its relative humidity? [60*F on horizontal axis, go up to 23.0 gr/lb on
vertical axis, RH = curved line at intersection of DB and Hum. Rat.]
Answer: 30%
◉ Air sample "A" has a dry bulb temperature of 80*F and a relative
humidity of 90%. Air sample "B" has a dry bulb temperature of 65*F
and a relative humidity of 90%. Which of the following statements is
true?
Answer: "A" has more sensible and latent heat as "B"
◉ If you have 10ohms of resistance and a voltage of 20 V, how much
current is going through the circuit? [Current = Voltage / Resistance]
Answer: 2 Amps
◉ Which is the unit of measure for AC power?
Answer: Watt
◉ If you have 3 resisters in a series and they each have 4ohms of
resistance, what is the total resistance in the circuit? [Rt =
R1+R2+...Rn]
Answer: 12ohms
, ◉ If you have 3 resisters in a parallel and they each have 4ohms of
resistance, what is the total resistance in the circuit? [1/Rt= 1/R1
+1/R2+...1/Rn]
Answer: 1/Rt= 1/0.75 = 1.33ohms
◉ If a THREE-phase circuit has 240V, using 100A with a power
factor of .5, what is the REAL power? [P = 1.73 x V x A x Power
Factor]
Answer: 20,760W
◉ In the United State, alternating current is provided by utility
companies at _______ hertz of cycles per second.
Answer: 60
◉ If a SINGLE-phase circuit has 120V, using 10A with a power factor
of .8, what is the APPARENT power? [P= V x A]
Answer: 1200W
◉ Which source or organization promotes a uniform organizational
system for categorizing construction materials, specifications, and
documentation into divisions and sections for projects?
Answer: Construction Specifications Institute