What is meant by the statement "Worm gear sets tend to be self-locking"?
What will be an ideal response?
A worm gear drive is said to be self-locking when motion cannot be started by applying torque to the output shaft (worm gear). This is an important feature in applications where the load may try to reverse the drive when the motor is turned off.
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Your letters of inquiry and application should present a strong, positive, professional image of you, both as a job seeker and future employee.
Answer the following statement true (T) or false (F)
In addition to a simple gauge glass, boiler water level is also monitored by _____.
a. one other independent system b. two other independent systems c. cameras d. motor-operated valves
Which of the following is NOT true?
A reaction A+B?C occurs in the liquid phase. A vessel contains a liquid at P = 1 MPa and T = 298.15 K. The vessel initially contains 10 moles of A and 10 moles of B, but the reaction is allowed to reach equilibrium at P = 1 MPa and T = 298.15 K. After the reaction reaches equilibrium, the pressure is reduced isothermally until it reaches 0.13 MPa, at which point the first bubble of vapor forms. The liquid at this point is 39 mol% A, 39 mol% B and 22 mol% C. The first bubble of vapor is 52 mol% A, 40 mol% B and 8 mol% C. A. If the pressure is further decreased isothermally, the total number of moles of C in the vessel will decrease. B. The vapor pressure of A at this temperature is about 0.173 MPa, assuming the liquid is an ideal solution. C. The equilibrium constant of the liquid phase reaction is 1.88, if the liquid is an ideal solution. D. The equilibrium constant for the reaction is 1.45, if the liquid is an ideal solution. E. If the vapor pressure of C is above 50kPa at this temperature, then the activity coefficient of C must be below 1.
Visual awareness is important in promoting safety within the workplace.