The critical frequency formula for an RC network proves
A) fc is inversely proportional to the square of R and C
B) fc is iproportional to R and C
C) fc is inversely proportional to the root of R and C
D) fc is inversely proportional to R and C
D
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Plants that survive periods of adverse environmental conditions as underground storage organs are called ________.
Fill in the blank(s) with the appropriate word(s).
You need to cool 8.0 kg/s of superheated steam at 1000 kPa from 325oC to 200oC. You can either use R-134a that is available as a saturated liquid at 0oC, or air that is available at 15oC and 100 kPa. Due to other operational factors, the R-134a must not have an exit quality of greater than 0.60, and the air can not have an exit temperature greater than 75oC. Design a system that will meet the constraint for each substance, and comment on the relative practicality of each system.
Consider State 1 to be the steam inlet and State 2 to be the steam outlet. Consider State 3 to be the coolant inlet and State 4 to be the coolant outlet. Given: P1 = P2 = 1000 kPa; T1 = 325oC; m?s = 8.0 kg/s; T2 = 200oC Assume: Q? = 0 (insulated). Also, given no other information regarding the heat exchanger, make the following common heat exchanger assumptions: W? = ?KE = ?PE = 0 Also, assume the heat exchanger is a multiple-inlet, multiple-outlet, steady-state, steady-flow device. What will be an ideal response?
Define the term hazard
What will be an ideal response?
Most European PLCs recognize a 1 state as a ____________________ (0, 1) level voltage and therefore use a ____________________ (sinking, sourcing) input module and a ____________________ (sinking, sourcing) output module.
Fill in the blank(s) with the appropriate word(s).