Plant symptoms such as aborted fruits, dead terminal buds, and misshapen new leaves suggest a deficiency of which micronutrient?
A) Cu B) Mn C) Fe D) B E) Zn
D
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A dc, separately excited motor is driving an elevator. At a load torque of 300 Nm, the motor speed is 100 rpm. The motor terminal voltage is 210 V, and the field constant K? is 3 Vs.
a. If the terminal voltage is reversed and reduced to 90 V, calculate the steady- state speed of the motor. b. Calculate the terminal voltage required to block (stop) the rotor. c. Sketch the speed torque characteristics and show all operating conditions
Where in the air conditioning system is the refrigerant a low pressure gas?
A) Evaporator inlet B) Evaporator outlet C) Condenser inlet D) Condenser outlet
On a standard desktop PC, which of the following would be known as an output device?
A. keyboard B. printer C. mouse D. webcam
Which of these is correct regarding brake shoes?
1) Brake shoes should be larger then a quarter on the steering axle. 2) Brake shoes should not be worn dangerously thin. 3) Brake shoes should have the same thickness of a penny.