Which sensor produces a digital signal?
A) Magnetic sensor B) Pickup coil
C) Hall-effect sensor D) Both B and C
C
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?With SAW, ESW, and EGW, the total cost of fabrication is ____, and it provides the same or ____ service.
A. ?higher, better B. ?higher, worse C. ?lower, better D. ?lower, worse
To prevent the spread of smoke and fire, fire dampers are designed to close:
A) All the time except when the system is operating. B) Manually. C) Using the NO contacts of the fire alarm relay. D) Automatically.
Eddy current loss in a transformer is ________
A) caused by rapid reversal of the magnetic field B) another name for flux leakage loss C) due to current flowing in the core D) caused by the resistance of the wire
A horse with the dominant allele ____ typically lacks pigment in its skin and hair at birth.
A. A B. C C. G D. W