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1. What is an advantage of a crossflow tower as compared to a counterflow cooling tower?
2. What is a cooling tower plume?
3. What is the working principle for an atmospheric-draft cooling tower?
a block and tackle system with nine supporting strands is used to lift a metal lathe in a manufacturing facility.
The following test data were obtained from testing a 48kVA, 4800/240-V, step down transformer: Open-circuit test Voltage (V) 240 Current (A) 2 Power (W) 120 Short-circuit test Voltage (V) 150 Current (A)10 Current
A water tank, 22 ft in diameter, is made from steel plates that are ½ in. thick. Find the maximum height to which the tank may be filled if the circumferential stress is limited to 6000 psi. The specific weight of water is 62.4 lb/ft.
is there any advantage of star connection over delta w.r.t. induction motors? also is there any advantage or
Derive the condition for zero voltage regulation. Also show that the magnitude of maximum voltage regulation equals the pu value of equivalent leakage impedance.
If the SCR of Fig. 13-41 has a gate trigger voltage of 1.5 V, a gate trigger current of 15 mA, and a holding current of 10 mA, what is the input voltage that triggers the SCR? The supply voltage that resets the SCR?
A 150-MVA 15/200-kV single-phase power transformer has a 0.018ohm resistance and a 0.075ohm reactance. The magnetizing impedance is j80 per unit. a.) Find the equivalent circuit referred to the low-voltage side of this transformer.
An LED is rated at VF=1.6V to 2.0V at IF=20mA. What value of series resistance is needed to limit the LED current to 20mA when this LED is connected to a 32 v peak source (that is, a source having a peak voltage of 32 v)
Assuming that the two machines can be reset to their starting states (S0 and T0), determine the shortest input sequence that will distinguish the two machines.
Determine how you would combine the voltages induced in the two dipoles so that the turnstile antenna is responsive to circular polarization rotating in the clockwise sense as viewed by the antenna but not to that of the counterclockwise sense of ..
a salient pole 60 Hz synchronous motor with a squirrel cage winding on the rotor which is used for starting purposes. (a) What is the frequency of the current in the squirrel cage rotor conductors immediately after the motor is energized (The motor..
Design a sequencer with an enabler with 3 outputs that when enabled follows a successive clock sequence of 000,000,011,011,110,110,010,011 when the last step is reached the sequence returns to the beginning.
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