As the engine piston moves downward on the intake stroke a ________ is created in the manifold
A) Dual-pressure difference B) Pressure differential
C) Mono-pressure front D) Gas difference
B
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? Identify and state the historical significance of the island-hopping strategy.
What will be an ideal response?
The circuit shown in Figure 2 is a(n) _____.
a. autotransformer reduced-voltage starter
b. part winding reduced-voltage starter
c. wye-delta reduced-voltage starter
d. solid-state reduced-voltage starter
A sine wave has a maximum voltage of 138 V. What is the voltage after 78 degrees of rotation?
a. 133.44 b. 134.96 c. 135.90 d. 136.17
The main cause of high condensing temperature and pressure in air-cooled condensers is:
A) Operating the condenser at low ambient temperatures without head pressure controls. B) Refrigerant undercharge. C) Dirty condensers. D) Excessive airflow over the condenser.