Since the overload unit must be sensitive to motor current, the heater of the overload relay is connected ____.
a. above the motor
b. in parallel with the motor
c. below the motor
d. in series with the motor
d. in series with the motor
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Indicate whether the statement is true or false
100 kg/s of nitrogen enters a steady-state counter-current heat exchanger at T = 150 K and P = 10 MPa. The nitrogen is cooled in the heat exchanger and then enters an adiabatic flash chamber. The outlet pressure of the flash chamber is P = 0.8 MPa. The liquid leaving the flash chamber is removed as product. The vapor leaving the flash chamber is returned to the counter-current heat exchanger, in which it is heated to a temperature of 135 K. What is the flow rate of liquid product? Use Figure 2-3 for data.
A. 100 kg/s B. 60 kg/s C. 25 kg/s D. 40 kg/s E. Insufficient information to solve
Gravity causes gases to exert force:
A) Downward and to the sides. B) Downward. C) In all directions. D) Gases do not exert force.
As loads are added in a parallel circuit, the total resistance of the circuit ____.
A. will increase B. will decrease C. will remain the same D. cannot be determined