Even though some propagators still measure light intensity with a photometric sensor that measures in units of ________, it is much more accurate to measure irradiance with a quantum sensor that measures photosynthetic flux (PPF) in units of ________, or with a pyranometric sensor which measures in units of ________.

Fill in the blank(s) with the appropriate word(s).


lux or foot-candles;
?mol m-2s-1;
watts per square meter (W m-2)

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In a typical air conditioning system, ____________________ cfm of air is moved through the evaporator for each 12,000 Btu/h cooling capacity of the system.

Fill in the blank(s) with the appropriate word(s).

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A misfire is detected by what sensor(s)?

A) Crankshaft position sensor (CKP) B) Knock sensor (KS) C) Camshaft position sensor (CMP) D) MAF and/or MAP

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In general, which is heavier humid air or dry air?

What will be an ideal response?

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On what vehicle model year and when did the EPA authorize the use of OBD testing as a replacement for tailpipe and dynamometer testing of emissions?

What will be an ideal response?

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