What can be said about the depletion region in a diode?
A) The depletion region size is independent of barrier voltage
B) The size of the depletion region is inversely proportional to barrier potential
C) The depletion region shrinks as the diode is reverse biased
D) The depletion region acts as an insulator and the dielectric value is proportional to barrier potential
D
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Which of the following measures is the minimum steam pressure for a high-pressure boiler?
A) 50 psi B) 160 psi C) 150 psi D) 15 psi
Which of the following is TRUE of a medium-temperature refrigeration unit?
A) It requires 1 hp to produce 1-1/3 tons of cooling. B) It requires 1 hp to produce 1 ton of cooling. C) It requires 1 hp to produce 2/3 ton of cooling. D) It requires 1 hp to produce 1/3 ton of cooling.
Define a contactor.
What will be an ideal response?
What effect is ozone depletion having on the environment?
A. increased ground level ozone (smog) B. reduced marine life C. reduced crop fields D. all of the above