Exam (elaborations)
Red seal online 313a practice test Questions with Correct Answers.
- Course
- Institution
Red seal online 313a practice test Questions with Correct Answers.
[Show more]
Content preview
Red seal online 313a practice test Questions withCorrect Answers
What would be the minimum VA requirment for a 24v AC transformer
powering 4 thermal electric expansion valves with a resistance of 150
across each heater? Correct Answer-15.4
What would be the problem on a time initiated, temperature terminated
defrost if the defrost cycle runs full time during periods of light coil
frosting? Correct Answer-Faulty defrost thermostat
If the pressure differential across the circulating pump is 21.65 psi, how
many feet of head is the pump capable of lifting? Correct Answer-50
When testing a compressor motor winding with a megger, what reading
would indicate a good clean system? Correct Answer-infinity
What is the minimum required sleeve size when installing a 2 in. pipe
with 1 1/2 insulation through a 8 in. concrete block exterior wall?
Correct Answer-6
What is the probable cause of high suction pressure on a heat pump?
Correct Answer-leaking four way valve
How should a load be lifted with a wrap around sling when crushing of
the load is a big concern Correct Answer-Place a spreader above and
below the load
, Which 3 instrument are required to check the calibration of and enthalpy
control on the economiser of a rooftop air conditioning unit? Correct
Answer-Thermometer, sling phychrometer, and multi meter
What is the indication of a plugged metering device? Correct Answer-
high suction gas super heat
what must be verified before replacing the electronic control board if the
onboard diagnostic fault is incorrect Correct Answer-verify power
supply, all inputs and loads are properly connected and true
What amperage capacity should the supply wiring be rated for a
refrigeration fixture which has a 208v power supply and the following
loads
-4 evap fan motors rated at 9w each
-4 Correct Answer-
What is the principle function of an expansion tank in a hot water
system? Correct Answer-It allows the volume of the water in the system
to change to maintain working pressure
What is the minimum required hole size to accommodate a 1 in. copper
pipe with 3/4 insulation? Correct Answer-2 5/8
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller cracker. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now