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SHUBHANGI MAHAJANEnlightened

Asked: June 22, 2022In: Acacia concinna

Identify the correct vector identity. a) i . i = j . j = k . k = 0 b) i X j = j X k = k X i = 1 c) Div (u X v) = v . Curl(u) – u . Curl(v) d) i . j = j . k = k . i = 1

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SHUBHANGI MAHAJANEnlightened

Asked: June 22, 2022In: Acacia concinna

The divergence of distance vector is a) 0 b) 3 c) 2 d) 1

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SHUBHANGI MAHAJANEnlightened

Asked: June 22, 2022In: Acacia concinna

Which of the Pythagorean Theorem is valid in Electromagnetics? a) |dot product| + |dot product| = 1 b) |cross product| – |cross product| = 1 c) |dot product|2 + |cross product|2 = 1 d) |dot product| + |cross product| = 0

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SHUBHANGI MAHAJANEnlightened

Asked: June 21, 2022In: Acacia concinna

How is the flux distributed in the field form? a) to reduce the high voltage b) to reduce the high current c) to reduce the harmonics d) to keep the total reluctance low

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SHUBHANGI MAHAJANEnlightened

Asked: June 21, 2022In: Acacia concinna

The plot of the flux density distribution curve is between the interpolar axis consisting of the flux density and the angle difference between phases. a) true b) false

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SHUBHANGI MAHAJANEnlightened

Asked: June 21, 2022In: Acacia concinna

What is the relation of the magnetizing current with the turns per phase? a) magnetizing current is directly proportional to the turns per phase b) magnetizing current is directly proportional to the square of the turns per phase c) magnetizing current is indirectly proportional to the turns per phase d) magnetizing current is indirectly proportional to the turns per phase

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SHUBHANGI MAHAJANEnlightened

Asked: June 21, 2022In: Acacia concinna

What is the formula of the specific permeance? a) specific permeance = permeability in air * ∫small change in width + length b) specific permeance = permeability in air * ∫small change in width/length c) specific permeance = permeability in air * ∫small change in width * length d) specific permeance = 1/permeability in air * ∫small change in width * length

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SHUBHANGI MAHAJANEnlightened

Asked: June 21, 2022In: Acacia concinna

What is the formula for the zigzag permeance? a) zigzag permeance = average width of the rotor tooth / (1/2 * mmf per slot2 ) b) zigzag permeance = average width of the rotor tooth * (1/2 * mmf per slot2 ) c) zigzag permeance = 1/average width of the rotor tooth *(1/2 * mmf per slot2 ) d) zigzag permeance = average width of the rotor tooth *(1/2 / mmf per slot2 )

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SHUBHANGI MAHAJANEnlightened

Asked: June 21, 2022In: Acacia concinna

What is the formula for the stored energy at any position? a) stored energy at any position = mmf per slot2 * permeance in a particular position b) stored energy at any position = 2 * mmf per slot2 * permeance in a particular position c) stored energy at any position = 1/2 * mmf per slot2 * permeance in a particular position d) stored energy at any position = 1/3 * mmf per slot2 * permeance in a particular position

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SHUBHANGI MAHAJANEnlightened

Asked: June 21, 2022In: Acacia concinna

In which machine is the pulsation losses considerable? a) synchronous motors b) induction motors c) dc shunt motors d) dc series motors

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