In a simple circuit, a 3.3 k? resistor is placed across a 12-V source. Current through the resistor is
A) 3.64 mA B) 3.64 A C) 36 mA D) 7.27 mA
A
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The strength of concrete depends on the _____.
a. percentage of sand in the mix b. water-cement ratio c. type of cement used d. mixing time
A ________ caliper has a one-piece caliper body and one large piston on the inboard side.
Fill in the blank(s) with the appropriate word(s).
The output of a comparator goes LOW when ________
A) the inverting input and non-inverting input voltages are equal B) the non-inverting input voltage is greater than the inverting input C) the invering input voltage is greater thatn the non-inverting input voltage D) the comparator is faulty
PTAC and window-unit air conditioners often use rotary compressors, which are effective but susceptible to failure due to high head pressure. What is the most common cause of high head pressure in these units?
A) Dirty condenser B) Metering device failure C) Incorrect charge D) Dirty evaporator