A hazard/risk category 4 task requires the use of FR clothing with a minimum arc rating of _________________.

A. 4
B. 8
C. 25
D. 40


Answer: D

Trades & Technology

You might also like to view...

The maximum pull that should be exerted on cables being pulled in tray when using a basket grip is _____.

a. 500 pounds b. 750 pounds c. 1,000 pounds d. 1,200 pounds

Trades & Technology

How does the receiver ensure that only 100% liquid refrigerant enters the liquid line?

A. By means of a dip tube. B. It only allows refrigerant to enter the liquid line when it is filled with liquid. C. The spring loaded relief valve opens. D. None of the above are correct.

Trades & Technology

Assuming the liquid is an ideal solution, determine the bubble point pressure, and determine whether the first bubble of vapor contains more product (C+D) or more reactant (A+B).

A reaction A+B?C+D occurs in the liquid phase. A vessel contains a liquid at P=0.5 MPa and T=298.15 K. The vessel initially contains 10 moles of A and 10 moles of B, but the reaction is allowed to reach equilibrium at P=0.5 MPa and T=298.15 K. After the reaction reaches equilibrium, the pressure is reduced isothermally until the first bubble of vapor forms. The equilibrium constant for the reaction is 0.8. Vapor pressures are 0.120MPa for compound A, 80kPa for compound B, 0.150MPa for compound C and 70kPa for compound D. A. 0.105 MPa, product B. 0.105 MPa, reactant C. 0.165 MPa, product D. 0.165 MPa, reactant E. None of these

Trades & Technology

Determine the final ratio of the following: Drive pulley has a diameter of 160 mm; driven pulley is 90 mm.

Fill in the blank(s) with the appropriate word(s).

Trades & Technology