DCC STUDY EXAM QUESTIONS AND
ANSWERS
1. How many values are needed for ohm's law?
E=I/R Voltage= current/resistance
2. What is the measurement for potential?
Joule/ coulomb/ voltage
3. TCTO NUMBER?
A TCTO is then tracked by the ACMS code, which contains six characters:
a. The first character shall be a "T" to designate the ACMS code as a TCTO.
The next two
characters indicate the applicable S1000D Chapter based on the equipment
affected (Appendix
K), i.e., J2 - Ventilation. The fourth and fifth characters contain the sequential
number within an
S1000D category and are specified in reference (b).
b. The sixth character of the ACMS code is used to track TCTO revisions. An
original TCTO
ends with a zero. Revisions to existing TCTOs shall be identified by the basic
four-digit TCTO
number, followed by a sequential number, depending on the number of times
the directive has
been revised. For example, the third revision to TCTO UTB-41 TB1000 would
be TCTO UTB-41
TB1003.
4. How is a TCTO Number scheme?
YYYY-####, for example 2015-0266
If there is a revision 2015-0266-2 think second version.
5. Whay is plasma cutting less messy than oxy cutting?
, PAC results in less distortion of the metal being cut. This is due also to a very
narrow heat affected zone (area changed in characteristics near the cut).
6. What type of copper pipe is for underground?
Three types of copper, designated as Types K, L, and M, are commonly used.
Type K is
used for underground service and general plumbing; Type L for general
plumbing; and
Type M with soldered fittings only.
7. Screw jack length?
6" or 1"
8. Welding a wedges on WTD?
AC Polarity, 120-150 amp, watercooled 2% lantanated 3/32", 40° sharp,
aluminum bronze filler metal. 1915°F melting point
9. When should a wedge be replaced?
wedge is worn when it has worn to less than half its original thickness of 5/16
inch on the flat portion of the wedge, or if the leading edge of the taper is 1/16
inch or less
10. Gasket for water tight door?
A permanent set or groove in the rubber may not be greater than 1/8-inch deep.
11. Temp for storing camealon casset?
Cassettes should be stored in a cool location with an optimal temperature of 77
degrees Fahrenheit.
12. Dry sprinkler system on ships?
Cmwd
13. Min height for lavatory sink?
The bracket must be level. If there are no manufacturer's specifications
available, the
bracket must be installed so the lavatory rim is 31 inches above the finished
ANSWERS
1. How many values are needed for ohm's law?
E=I/R Voltage= current/resistance
2. What is the measurement for potential?
Joule/ coulomb/ voltage
3. TCTO NUMBER?
A TCTO is then tracked by the ACMS code, which contains six characters:
a. The first character shall be a "T" to designate the ACMS code as a TCTO.
The next two
characters indicate the applicable S1000D Chapter based on the equipment
affected (Appendix
K), i.e., J2 - Ventilation. The fourth and fifth characters contain the sequential
number within an
S1000D category and are specified in reference (b).
b. The sixth character of the ACMS code is used to track TCTO revisions. An
original TCTO
ends with a zero. Revisions to existing TCTOs shall be identified by the basic
four-digit TCTO
number, followed by a sequential number, depending on the number of times
the directive has
been revised. For example, the third revision to TCTO UTB-41 TB1000 would
be TCTO UTB-41
TB1003.
4. How is a TCTO Number scheme?
YYYY-####, for example 2015-0266
If there is a revision 2015-0266-2 think second version.
5. Whay is plasma cutting less messy than oxy cutting?
, PAC results in less distortion of the metal being cut. This is due also to a very
narrow heat affected zone (area changed in characteristics near the cut).
6. What type of copper pipe is for underground?
Three types of copper, designated as Types K, L, and M, are commonly used.
Type K is
used for underground service and general plumbing; Type L for general
plumbing; and
Type M with soldered fittings only.
7. Screw jack length?
6" or 1"
8. Welding a wedges on WTD?
AC Polarity, 120-150 amp, watercooled 2% lantanated 3/32", 40° sharp,
aluminum bronze filler metal. 1915°F melting point
9. When should a wedge be replaced?
wedge is worn when it has worn to less than half its original thickness of 5/16
inch on the flat portion of the wedge, or if the leading edge of the taper is 1/16
inch or less
10. Gasket for water tight door?
A permanent set or groove in the rubber may not be greater than 1/8-inch deep.
11. Temp for storing camealon casset?
Cassettes should be stored in a cool location with an optimal temperature of 77
degrees Fahrenheit.
12. Dry sprinkler system on ships?
Cmwd
13. Min height for lavatory sink?
The bracket must be level. If there are no manufacturer's specifications
available, the
bracket must be installed so the lavatory rim is 31 inches above the finished
