A standards and testing organization that specializes in product safety is:
A) The Underwriters Laboratories - UL.
B) The International Code Council - ICC.
C) The Environmental Protection Agency - EPA.
D) The National Fire Protection Association - NFPA.
A
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A distillation unit is to be used to generate pure water vapor. 5.0 lbm/s of liquid water at 100oF enters the system, and 1.0 lbm/s of saturated water vapor leaves through one port and 4.0 lbm/s of saturated liquid leaves through a second port (along with impurities in the water which can be neglected in the analysis). The pressure throughout the whole system is 20 psia. A stirring system is used, which is powered by a 0.4 hp motor – assume that all of the motor’s work enters the system. All other energy is added through heat transfer.
(a) Determine the rate of heat transfer needed to produce this flow of saturated water vapor. (b) Using your separation chamber model, plot the heat transfer rates needed to produce saturated water vapor flow rates between 0.5 lbm/s and 4.0 lbm/s (along with corresponding changes to the saturated liquid water exit flow rates). State 1: Inlet stream; State 2: Saturated vapor exit stream; State 3: Saturated liquid exit. Given: P1 = P2 = P3 = 20 psia; T1 = 100oF; x2 = 1.0; x3 = 0.0; m?1=5.0lbm/s; m?2=1.0lbm/a; m?3=4.0lbm/a; W?=?0.4 hp=?0.283 Btu/s Assume: Given no other information regarding the mixing chamber, make the following common assumptions: ?KE=?PE=0. We are told there is heat transfer. Also, assume the mixing chamber is a single-inlet, multiple-outlet, steady-state, steady-flow device. What will be an ideal response?
What voltage must be supplied to the throttle position sensor used on most OEM EUI-fueled engines?
A. system voltage B. V-Bat C. V-Ref D. PWM signal
What does N stand for in the following equation? F max = µN
a. Newtons b. Normal force c. Natural force d. Natural frequency
Technician A says that when a torque converter flex plate is used, a flywheel is never required. Technician B says that when a flex plate is used, the starter motor pinion engages with teeth on the converter housing. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B