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What is the maximum value of the peripheral speed that should not exceed?
Answer: c Explanation: The peripheral speed of the machine should not exceed 30 m per sec. If it exceeds it leads to the damage of the windings. The banding wires on the overhang have to be made so strong if the peripheral speed exceeds 30 m per sec.
Answer: c
Explanation: The peripheral speed of the machine should not exceed 30 m per sec. If it
exceeds it leads to the damage of the windings. The banding wires on the overhang
have to be made so strong if the peripheral speed exceeds 30 m per sec.
See lessWhat is the relationship between the diameter and number of poles?
Answer: a Explanation: The number of poles is one of the factors involved in the separation of D and L in the synchronous machines. The number of poles is directly proportional to the diameter.
Answer: a
Explanation: The number of poles is one of the factors involved in the separation of D
and L in the synchronous machines. The number of poles is directly proportional to the
diameter.
See lessWhat is the factor which is by modern motors which are into a series of standard frames?
Answer: c Explanation: The modern motors for industrial applications is concentrated into a series of standard frames. The standard frames are used to cover a wide range of power ratings
Answer: c
Explanation: The modern motors for industrial applications is concentrated into a series
of standard frames. The standard frames are used to cover a wide range of power
ratings
See lessThe core length should be high to obtain high short circuit ratio.
Answer: a Explanation: The core length is directly proportional to the short circuit ratio. If high short circuit ratio is required, high core length should be used.
Answer: a
Explanation: The core length is directly proportional to the short circuit ratio. If high short
circuit ratio is required, high core length should be used.
See lessHow 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
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 specific electric loading
See lessWhat 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
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.
See lessWhat 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
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.
See lessHow 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
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.
See lessHow 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
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.
See lessHow 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
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.
See less