Answer:
a. 30.O7A
b. no reading
Explanation:
for the first load with power factor 0.8, we calculate the reactive power
note the reactive power is calculated as
where p=power
a. for the first load the reactive power is
for the second load the reactive power is
The total reactive power is the summation of both reactive power in he load
and the total real power is 25kw
Hence using Pythagoras theorem to calculate the apparent power we have
Hence we can determine the source current using
b. in a balance 3phase system, there is no neutral current, Hence the ammeter will read zero current
Answer:
A CC power source will maintain current at a relatively constant level, while a CV power source will maintain voltage at a relatively constant level.
Explanation:
A CC power source will maintain current at a relatively constant level, regardless of fairly large changes in voltage, while a CV power source will maintain voltage at a relatively constant level, regardless of fairly large changes in current.
Answer:
Option B Lower than
Explanation:
Gauge pressure is a relative measurement based on atmospheric pressure. Gauge pressure can be positive if it is above atmospheric pressure or it can also be negative it is below. On another hand, absolute pressure is an actual pressure in a space and its value has always to be zero or above. Basically absolute pressure is zero if it is in a perfect vacuum. So the measurement of absolute pressure is gauge pressure + atmospheric pressure. This is the reason in normal condition the gauge pressure = absolute pressure - atmospheric pressure and therefore is lower than absolute pressure
Answer:
Catalog A can carry the larger load
Explanation:
Refer to the attachment for details to the answer.