Why are HEPA filters desirable?
What will be an ideal response?
HEPA filters are desirable since they can trap particles that can contain mold, dust mites, pollen, and bacteria.
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Portland cement and lime (PCL) together function as the binder in masonry mortar. What is the role of Portland cement (PC) in mortar after the wall has been constructed?
What will be an ideal response?
Cattle receiving melengestrol acetate (MGA) show decreased growth rates
Indicate whether the statement is true or false
Calculate the following:
A dc, separately excited motor is used to hoist a constant-weight load. The motor is driven by a full-wave, ac/dc converter. The voltage on the ac side is 110 V (rms). The field constant of the motor K? is 3 Vs, and the armature resistance is 1 ?. The armature current is continuous under loaded conditions. When the triggering angle is 30o, the motor speed is 60 rpm. a. Load torque b. Load power c. Armature current when the triggering angle is adjusted to 45° d. Motor speed when the triggering angle is reduced to 30° and the field current is reduced by 10%
A salesman from Industrial Water Services (IWS), who is trying to get his foot in the door of Westco Refining, offered electro-dialysis equipment for $2.5 million. This is $800,000 more than the price offered by a competing saleswoman from AG Enterprises. However, IWS said Westco won’t have to pay for the equipment until the 2-year warranty runs out. IWS will also offer an extended 2-year warranty for $100,000, payable 2 years from now. If Westco does want the extended warranty, determine which offer is better using Westco’s real return requirement of 15% per year and an assumed inflation rate of 3.5% per year.
What will be an ideal response?