If three 2.2 k? resistors are connected in series across a 50 V source, PT equals ________
A) 402 mW B) 379 mW C) 52.08 mW D) 104.2 mW
B
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Technician A says in most transmissions, the oil pump is bolted to the transmission case. Technician B says in some transmissions, the oil pump is press-fitted into the case. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Where in a bid are administrative salaries, advertising costs, rent, and office expenses included?
a. labor c. overhead b. contingency costs d. materials
A recent attempt to circumnavigate the world in a balloon used a helium-filled balloon whose volume was 7240 m3 and surface area was 1800 m2. The skin of this balloon is 2 mm thick and is made of a material whose helium diffusion coefficient is 1 × 10?9 m2/s. The molar concentration of the helium at the inner surface of the balloon skin is 0.2 kmol/m3 and the molar concentration at the outer surface is extremely small. The rate at which helium is lost from this balloon is
(a) 0.26 kg/h (b) 1.5 kg/h (c) 2.6 kg/h (d) 3.8 kg/h (e) 5.2 kg/h
What friction rate should be used to size a duct for a design friction rate of 0.12 in WC if the duct has a total equivalent length of 150 ft?
A) 0.12 × (150/100 ) = 0.12 × 1.5 = 0.18 in WC B) 0.12 × (100/150 ) = 0.67 × 0.12 = 0.08 in WC C) 0.1 in wc because that is the standard factor D) 0.12 in WC because the duct length is irrelevant