The first step to determining if bioremediation is the most efficient way to decrease the level of toxic waste in soils is to:
a. treat sample materials with active microbes
b. study the site periodically for recyclability
c. ask state agencies to consider closing the site
d. solicit regulatory agencies for contaminants
A
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Technician A says that a leaking head gasket can be checked using a chemical tester. Technician B says that a leaking head gasket can be found using an exhaust gas analyzer. Which technician is correct?
A) Technician A only B) Technician B only C) Both Technicians A and B D) Neither Technician A nor B
Which statement below is correct?
A) Hall-effect sensors should show a constant signal voltage when the engine is cranked B) A pickup coil should be diagnosed with a meter set to DC volts C) A voltmeter is a better tool than a digital storage oscilloscope to diagnose an engine position sensor D) A pickup coil can be diagnosed using a digital storage oscilloscope
36 V of dc is applied to a windings ratio of 1:2. What is the secondary voltage?
A) something slightly less than 72 V since transformers do have some loss B) 144 V C) 72 V D) none of the above
The data storage device which can be constructed using two NAND gates or two NOR gates is the
A) J-K flip-flop. B) multiplexer. C) S-R flip-flop. D) encoder.