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BICSI RCDD-002 - BICSI Registered Communications Distribution Designer - RCDD

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Total 361 questions

Which of the following covers lightning protection systems and defines as exposed anything above ground and outside the zone of protection?

A.

NTSB-12

B.

IEEE 1100

C.

NFPA 780

D.

NEC 47

E.

ANSI J/STD-607-A

Often associated with raised flooring, a(n) ________ may consist of copper straps taped to the concrete floor, or it may be the floor itself with the stringers that support the tiles acting as the bonding conductor across the gradient of the floor.

A.

Grounding electrode conductor (GEC)

B.

Electrical ground bar (EGB)

C.

Signal reference grid (SRG)

D.

Telecommunications bonding backbone (TBB)

E.

Drain wire

The MINIMUM dimensions of the telecommunications main grounding busbar is ________ and variable in length.

A.

4 mm (0.16 in) x 80 mm (3.15 in)

B.

6.3 mm (0.25 in) x 100 mm (4 in)

C.

8 mm (0.31 in) x 110 mm (4.33 in)

D.

10.5 mm (0.41 in) x 140 mm (5.51 in)

E.

12.75 mm (0.50 in) x 175 mm (6.89 in)

Certain systems must exist relative to bonding and grounding at every site. Which of the following is NOT one such system?

A.

AC grounding electrode system (e.g., in some countries it may also be known as the earthing system)

B.

Telecommunications bonding infrastructure

C.

Lightning protection system

D.

Equipment grounding system (e.g., in some countries it may also be known as the equipment bonding system)

You are designing a telecommunications grounding system for a telecommunications room (TR). The TMGB is located 15 m (50 ft) from the telecommunications rack. What is the MINIMUM AWG of the ground conductor required?

A.

Two

B.

Three

C.

Four

D.

Six

E.

Eight

Phase difference is the relationship in time between two waveforms of the same:

A.

Power

B.

Voltage

C.

Frequency

D.

Current

You have been asked to provide a UPS that is always serving the load from its batteries and the electrical supply is used only to recharge the batteries. Which one of the following types of UPS will meet this requirement?

A.

Off line, standby

B.

Line interactive

C.

Online double conversion

D.

Rotary

E.

Flywheel

The formula for calculating BTUs from electrical power is:

A.

W x 0.707

B.

W x 1.732

C.

W x 3.1416

D.

W x 3.413

You have been asked to provide a N+1 level of power redundancy in the new equipment room (ER) being designed with a Tier-II power supply. What should you do?

A.

Provide a UPS that serves all of the equipment in the facility.

B.

Provide two separate UPS units with an automatic power failure transfer to serve entire facility.

C.

Provide two separate UPS units with each one serving half the equipment in the facility.

D.

Provide two separate UPS systems with one serving the entire facility and the second on automatic power failure transfer to serve critical circuits only.

Which of the following electrical devices is used to convert AC to DC?

A.

Inverter

B.

Rectifier

C.

Transformer

D.

Line filter