Briefly describe what causes the armature to act as a generator in the process of dynamic braking.
What will be an ideal response?
As the armature is disconnected from the power source, a dynamic braking resistor is connected across the armature. The armature is still spinning and the shunt field is still energized, so the armature acts as a generator.
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____ line dimensioning is used when accurate layout work to precision limits is required.
A. Staggered B. Relative C. Base D. Circle
The refrigerant lines for single zone mini-split air conditioners are usually connected by:
A) Flare fittings. B) SAE compression fittings. C) Reflok fittings. D) Brazed connections.
Vertical lines going from top to bottom are referred to as which of the following?
A) Enthalpy B) Constant quality C) Saturation curve D) Pressure line
Technician A says that changing the swash angle in a swashplate pump varies the displacement of the pump. Technician B says that some swashplate pumps are fixed displacement. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B