Exam (elaborations)
VDV STUDY GUIDE V1.0 QUESTIONS AND ANSWERS
- Course
- Institution
VDV STUDY GUIDE V1.0 QUESTIONS AND ANSWERS
[Show more]
Content preview
Name: Score:68 Multiple choice questions
Term 1 of 68
Purpose of notification appliance device for fire alarm system?
Synchronization
Resistance
Compression
Get building occupants attention
Term 2 of 68
For series circuit involving 240v load and 5ohms resistor, find current
Accessible portion
I = E/R
= 240V/5ohms
= 48 amps
insulating joint [800.93(a)]
Get building occupants attention
Term 3 of 68
dB is a ratio of
10 ft
4 inches
0 quantities
2 quantities
,Term 4 of 68
What listed cable is used for dwelling?
CATVP
VACUUM
CATVX
NONE
Term 5 of 68
What is the rule for current in parallel circuit?
Total current is equal to the sum of the current through all branches.
Total current is divided equally among all branches regardless of resistance.
Total current is determined by the highest current in any single branch.
Total current flows only through the branch with the least resistance.
Term 6 of 68
What is not needed for focal length
Source
Area
Volume
Resistance
Term 7 of 68
A ceiling shall be treated as smooth if the beams project no more than how many inches
below the ceiling?
4 inches
6 feet
10 ft
14 awg
,Term 8 of 68
What is the final step in certification testing?
flame-detector
reading will be resistance
saving each test
motion sensor
Term 9 of 68
Where the communications cable enters a building, the metallic sheath members of the cable
shall be the grounded or interrupted by a
insulating joint [800.93(a)]
voltage polarity
6awg (800.100(d))
synchronization
Term 10 of 68
Which of the following statements is correct regarding the support of communication cables?
Compression
Communications cables can be loosely hung from the ceiling using any available
materials.
Communications cables should not be strapped, taped or attached by any means to the
exterior of any conduit or raceway as a means of support.
Communications cables must be buried underground to ensure proper support and
safety.
, Term 11 of 68
How far should you be from powerlines when working on a boom lift
2 hours
25 ft
10 ft
200 ft
Term 12 of 68
In communication circuits a bonding jumper shall be used to connect the communicating
grounding electrode and power grounding electrode system by a wire not smaller than
200 ft
6awg (800.100(d))
1680mm (66in)
.5 inch (13mm)
Term 13 of 68
What is the cable marking for Class 3 plenum?
CL3P
Ofnp
Cl2r
Cl2p
Term 14 of 68
In a community antenna television system, what is a permitted substituton for CATVP cable?
BLP
BMR
CL3P
OFNP
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 selftest. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.00. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
81531 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now