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What is the relation between the output and the flux density?
Answer: a Explanation: Flux density is one of the factors used in the determination of the specific magnetic loading. The flux density is directly proportional to the output.
Answer: a
See lessExplanation: Flux density is one of the factors used in the determination of the specific magnetic loading. The flux density is directly proportional to the output.
How many factors are used to determine the specific electric loading?
Answer: c Explanation: There are 4 factors used to determine the specific electric loading. They are temperature rise, cooling coefficient, size of machine, current density.
Answer: c
See lessExplanation: There are 4 factors used to determine the specific electric loading. They are temperature rise, cooling coefficient, size of machine, current density.
How many factors are used to determine the specific magnetic loading?
Answer: b Explanation: There are 3 factors are used to determine the specific magnetic loading. They are maximum flux density in iron parts of machine, magnetizing current and core losses.
Answer: b
See lessExplanation: There are 3 factors are used to determine the specific magnetic loading.
They are maximum flux density in iron parts of machine, magnetizing current and core losses.
How many factors affecting the size of rotating machines?
Answer: d Explanation: There are 2 factors that affect the size of rotating machines. They are speed of the machines and the output coefficient of the machines.
Answer: d
See lessExplanation: There are 2 factors that affect the size of rotating machines. They are
speed of the machines and the output coefficient of the machines.
How many terms can be used to express the output of a machine?
Answer: b Explanation: There are 4 terms that can be used to express the output of a machine. They are main dimension, specific magnetic loading, specific electric loading, speed.
Answer: b
See lessExplanation: There are 4 terms that can be used to express the output of a machine.
They are main dimension, specific magnetic loading, specific electric loading, speed.
What is the formula of the specific electric loading?
Answer: c Explanation: The total flux around the air gap and the area of flux path at the air gap is calculated. On substitution, the specific electric loading is calculated.
Answer: c
See lessExplanation: The total flux around the air gap and the area of flux path at the air gap is calculated. On substitution, the specific electric loading is calculated.
What is the formula of the total magnetic loading?
Answer: a Explanation: There are 2 types of loadings in the total loadings which are total magnetic loading and total electric loading. The total magnetic loading is the total flux around the armature periphery at the air gap.
Answer: a
See lessExplanation: There are 2 types of loadings in the total loadings which are total magnetic loading and total electric loading. The total magnetic loading is the total flux around the armature periphery at the air gap.
How many factors are present in the relation between rating and dimension of rotating machines?
Answer: c Explanation: There are 8 factors present in the relation between rating and dimension of rotating machines. They are symbols, main dimensions, total loadings, specific loadings, output equation, factors affecting size of rotating machine, choice of specific magnetic loading, choice of specRead more
Answer: c
See lessExplanation: There are 8 factors present in the relation between rating and dimension of rotating machines. They are symbols, main dimensions, total loadings, specific loadings, output equation, factors affecting size of rotating machine, choice of specific magnetic loading, choice of specific electric loading.
What Is the formula for the amplitude of the fundamental curve?
Answer: a Explanation: The flux density in the air gap is calculated along with the cosine of the phase angle divided by 2. On substitution, the amplitude of the fundamental curve is calculated.
Answer: a
See lessExplanation: The flux density in the air gap is calculated along with the cosine of the
phase angle divided by 2. On substitution, the amplitude of the fundamental curve is
calculated.
What happens if the field form is symmetrical about the pole axis?
Answer: d Explanation: If the field form is symmetrical about the pole axis the north and south pole of a machine are similar. As the poles are similar, no harmonics and no cosine terms and the constant term is zero.
Answer: d
See lessExplanation: If the field form is symmetrical about the pole axis the north and south pole of a machine are similar. As the poles are similar, no harmonics and no cosine terms and the constant term is zero.