The buffer solution within a pH electrode has a pH value of 7.0.
Answer the following statement true (T) or false (F)
True
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A synchronous motor is rated at 100 kVA. The motor is connected to an infinite bus of 5 kV. The synchronous reactance of the motor is 0.1 ?. The motor is running at a no-loading condition (real power output is zero). All losses can be ignored. Calculate the equivalent field voltage Ef that operates the motor as a synchronous condenser delivering 100 kVAR to the infinite bus. Draw the phasor diagram. (A synchronous condenser produces reactive power and no real power.)
What will be an ideal response?
The weld symbol in which a small circle is drawn with its center at the intersection of the leader line and the reference line means ____.
A. it is a field weld B. it is a plug and slot weld C. to weld all around D. to spot weld E. none of the above
An AC induction machine has six poles and is designed for 60-Hz, 240-V (rms) operation. When the machine operates with 10 percent slip, it produces 60 N-m of torque.
a. The machine is now used in conjunction with a friction load that opposes a torque of 50 N-m. Determine the speed and slip of the machine when used with the above-mentioned load. b. If the machine has an efficiency of 92 percent, what minimum rms current is required for operation with the load of part a? (Hint: You may assume that the speed–torque curve is approximately linear in the region of interest.)
In each configuration of transistor amplifier circuits, the ____ junction is forward biased, while the collector-base junction is reverse biased.
A. emitter-collector B. base-emitter C. collector-emitter D. emitter-base