A pitot-static tube is used to measure the speed of an airplane. At a velocity of V1 the difference between the stagnation and static pressures is p1. The plane then accelerates at the same altitude to a new velocity V2 where the pressure reading is 2p1 The relation between the velocity V2 and the velocity V1 is:

V₂ = (2ΔP/ρ)1/2 + V₁

where, ΔP = Pstag – P.

and P = P₂ - P₁

Pstag is the stagnation pressure

Explanation:

nec chapter 5 contains

c. information on special occupancy areas

nec chapter 6 covers

a. special equipment

which of the following rules contain the words shall or shall not and must be adhered to?

b. mandatory rules

which of the following rules identify actions that are allowed but not required and typically cover options or alternative methods?

c. optional rules

which of the following serves as the introduction to the nec and provides an overview of the book?

a. nec article 90

organizations that test products for safety are

c. nrtls

the nec is published by the

a national fire protection association

the nec is divided into

b. 9 chapters

the nec provides informative annexes for

c. informational materials and examples

two terms from nec article 100 that trainees should become familiar with are

b. labeled and listed

explanation: