Part-02 Aramco CBT Electrical Qc Questions and Answers Free
41) What is the meaning of abbreviation ANSI?
Answer:
American National Standard Institute
42) What is the meaning of abbreviation NEMA?
Answer:
National Electrical Manufacturers Association
43) What is the meaning of IEEE?
Answer:
Institute of Electrical and Electronics Engineers
44) What is the meaning of ICEA?
Answer:
Insulated Cable Engineers Association
45) What is the meaning of NFPA?
Answer:
National Fire Protection Association
46) What is the meaning of UL?
Answer:
Underwriters Laboratories
47) What is the standards used for the installation of cable trays
Answer:
NEMA VE 2
48) What is the standards used for the design, manufacturing, and testing of cable trays
Answer:
NEMA VE 1
49) What is the meaning of the abbreviation ” XLPE” in XLPE cable
Answer:
Cross‐linked Polyethylene
50) Splices and terminations rated ______shall be made by personnel certified in accordance with Saudi Aramco General Instruction GI‐0002.705
Answer:
>1000V
51) Minimum conductor size for cables rated 600V and below (control)
Answer:
2.5mm² (14 AWG)
52) Minimum conductor size for cables rated 600V and below (power)
Answer:
4mm² (12 AWG)
53) Minimum conductor size for cables rated 5KV
Answer:
10mm² (8 AWG)
54) Minimum conductor size for cables rated 15KV
Answer:
35mm² (2 AWG)
55) Minimum conductor size for cables rated 35KV
Answer:
50mm² (1/0 AWG)
56) Minimum conductor size for cables rated 69KV
Answer:
120mm² (4/0 AWG)
57) Maximum conductor size for cables rated above 69KV
Answer:
500mm² (1,000 kcmils)
58) In electrical area classification, please define Class I, Zone 0
Answer:
An atmosphere which the ignitable concentration of gas are present for long periods of time under normal operating condition
59) In electrical area classification, please define Class I, Zone 1
Answer:
An atmosphere which the ignitable concentration of gas are likely to be present for short periods of time under normal operating condition
60) In electrical area classification, please define Class I, Zone 2
Answer:
An atmosphere which the ignitable concentration of gas are unlikely to be present under normal operating condition
61) Unarmored type cables shall be used for voltage rated up to ________
Answer:
1000V
62) All threaded cable fittings including terminators (glands) for metric size cables shall have tapered (NPT) threads in accordance with ANSI/ASME B1.20.1. (TRUE or FALSE)
Answer:
TRUE
63) Cable glands shall be designed not to permit disconnection without the need to rotate the cable or the equipment on which the gland is terminated (TRUE or FALSE)
Answer:
FALSE
64) Insulated grounding conductors shall be identified by the colors _____________
Answer:
Green or green w/ yellow stripes
65) Medium and high voltage terminations installed indoors shall have a minimum creepage distance to ground per KV line‐to‐line nominal system voltage.
Answer:
25mm
66) Medium and high voltage terminations (operating at 2.4KV and above) installed outdoors shall have a minimum creepage distance to ground per KV line‐to‐line nominal system voltage.
Answer:
40mm
67) In outdoor plant areas, equipment and terminal enclosure shall be NEMA Type 1 and Type 2 (TRUE or FALSE)
Answer:
FALSE
68) In outdoor plant and other industrial areas located in severe corrosive environments, the equipment and terminal enclosures shall be NEMA Type 10 (TRUE or FALSE
Answer:
FALSE
69) Enclosures and junction boxes having an internal volume exceeding ________ shall be provided with Type 300 series stainless steel breather and drain fittings, or combination of breather and drain fitting.
Answer:
2000cm³
70) 70 Minimum modulus of elasticity for PVC Direct Buried Conduit
Answer:
Type DB‐120 500,000 psi
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