Select the correct statement(s) regarding signal-to-noise ratio (snr) calculations. a. when determining the non-decibel value of s/n, mixing units (i. e., mw and w) between s and n is permissible (e. g., s(mw)/n(w)) b. snr can only be given in decibel form because it represents a ratio of powers c. the decibel value of snr is given by: [snr]=[s]-[n], where "[ ]" indicates decibel values d. the decibel value of snr is given by: [snr]=[s]/[n], where "[ ]" indicates decibel values

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater