Exam Study Questions with 100%
Correct Answers
1. This test is used to locate a leak in the propane system - ANSWER Bubble
solution test
2. During operating pressure test manometer should read about __ in Wc -
ANSWER 11
3. This test is used to verify pressure at which the regulator locks up when no
propane is flowing - ANSWER Lock up pressure test
4. During lock up pressure test reading must never exceed ___ in Wc -
ANSWER 14
5. This test is used to determine if the propane system is leak free by dropping
internal pressure to 8 in Wc for 3 minutes - ANSWER Timed pressure drop
test
6. During a Pdi on the propane system technician should set delivery line
pressure, verify regulator lock up pressure, preform a ________ _________
_________, check connections using a bubble solution - ANSWER Times
pressure drop test
7. Electrons in the outer orbit are attracted _____ powerfully to the nucleus -
ANSWER Less
,8. Ends of permanent magnets are ___ concentrated than the middles -
ANSWER More
9. When 2 points of unequal potential or voltage are connected : - ANSWER
Current flows
10.Batteries joined in ____ give the same amperage and add voltage -
ANSWER Series
11.To measure current with a VOM, connect the VOM in _______ with the
source - ANSWER Series
12.Convert 125 milliamperes to amperes - ANSWER .125
13.Correct setting on a VOM for measuring DC amperage is - ANSWER mA
or DCA
14.When using a VOM to test for voltage in simple circuits always connect the
VOM in _______ with the load - ANSWER Parallel
15.Convert 400 millivolts to volts. - ANSWER .40
16.An ohm is - ANSWER The basic unit of resistance
17.constant voltage and double resistance is equal to - ANSWER 1/2 the
current
,18.In the final calculations of ohms law, current is always expressed in: -
ANSWER Amperes
19.Equipment grounding: - ANSWER The intentional grounding of all metal
non current carrying parts of the electrical system
20.This is the combination of a conductor and an electricity source connecting
together to permit electrons to travel in a continuous system - ANSWER
Electrical circuit
21.This type of load utilizes low voltage direct current - ANSWER DC Load
22.Receptacles in bathrooms must have - ANSWER GCFI protection
23.Batteries connected in _______ have a higher current capacity - ANSWER
Parallel
24.Electrons are - ANSWER negative
25.Protons are - ANSWER positive
26.This force is equal to voltage - ANSWER Electromotive force
27.Connecting batteries in ________ increases current and keeps the voltage
the same - ANSWER Parallel
28.Propane system functions at ___ in Wc - ANSWER 11
, 29.The maximum lock up pressure for propane regulator is ___ in Wc -
ANSWER 14
30.The 1st stage regulator reduces propane container pressure to about ___ psi -
ANSWER 10
31.The second stage regulator reduces propane pressure of 10 psi to ___ in Wc
- ANSWER 11
32.Appliance regulators are set to: - ANSWER 10-10.5 in Wc
33.Propane cylinder considered full at? - ANSWER 80%
34.Why only fill propane containers to 80% - ANSWER To leave room for
expansion and vaporization
35.Propane boils at ? - ANSWER 44 degrees F
36.DOT cylinders - ANSWER Expire after 10 years
Can be removed
37.ASME tanks - ANSWER Do not expire
Permanently mounted to chassis
38.The 4 appurtenances of ASME tank - ANSWER a. Vapor withdrawal tube
b. OPD(overfill protection device)