Transformer that are to be be connected in parallel must have indentical electrical characteristics. a) true, b) false when disconnecting paralleled single-phase transformer, which side should always be disconnected first? a) primary, b) secondary, c) does not matter, either a or b. ___________is a term used to discribe a material's ability to retain magnetism.( a) coercive force, b) retentivity, c)either a or b, d) neither a nor b.) A_________ coervive force is

Transformer that are to be be connected in parallel must have indentical electrical characteristics. a) true, b) false when disconnecting paralleled single-phase transformer, which side should always be disconnected first? a) primary, b) secondary, c) does not matter, either a or b. ___is a term used to discribe a material's ability to retain magnetism.( a) coercive force, b) retentivity, c)either a or b, d) neither a nor b.) A_ coervive force is

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Electrical machine no 6 A simple AC generator consists of an N = 10 turn coil of area A = 1200cm2 which rotates at a constant frequency of 60Hz in a 0.40T magnetic field. What is the peak emf of the device?
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1.) Should the speed at which a magnet is moved through a coil of wire affect the measured peak voltage across the coil? If so, how? 2)If a magnet is moved through a coil of wire South pole first instead of North pole first, how should the measured voltage response be affected? 3) Should the number of individual coils in the wire have an effect on the measured emf? If so, how? 4) Below draw a graph of the expected magnetic flux through a point in the coil as a function of time as the magnet passes through the coil.
62. Alternating Current Alternating current is produced when an armature rotates about its axis in a magnetic field, as shown in the figure. Generators A and B rotate counterclock- wise at 60 Hz (cycles per second) and each generator pro- duces a maximum of 50 V. The voltage for each generator is modeled by E = 50 sin(12071) Eg = 50 sin 120nt - 4 (a) Find the voltage phase for each generator, and find the phase difference. (b) Are the generators producing voltage in phase? Through what angle should the armature in the second generator be rotated counterclockwise in order that the two genera- tors produce voltage in phase? - Magnets – N S Wire.
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