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

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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

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On a standard desktop PC, which of the following would be known as an output device?

A. keyboard B. printer C. mouse D. webcam

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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.

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