What is induced magnetism? When is the magnetic field stronger?
What will be an ideal response?
Induced magnetism is created when a piece of iron is placed in a magnetic field. The closer an object is to the magnet, the stronger the magnetic field is on the object.
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Which of the following will not increase the efficiency of water use by plants in an irrigation system?
A) the use of flood irrigation for forage crops B) the use of drip irrigation for fruit trees C) the use of crop residues to reduce evaporation D) the use of herbicides to control weeds E) the use of concrete-lined delivery ditches
The primary mark of a well designed fluid nozzle is that it:
A) Is small in order to raise fluid pressure B) Is large enough to transmit lots of fluid C) Keeps air away from the cutting area D) Is directed at the wheel-work interface
Name the most common type of unwanted texture and explain the main causes and remedies for it.
What will be an ideal response?
What machines operate on the same principle of electromagnetic induction as DC generators, but they have no commutator?
A. alternators B. transformers C. oscillators D. converters