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What is the range of the transformation ratio in the pole machines?
Answer: c Explanation: The transformation ratio in 2 pole motors is 0.1-0.25. The transformation ratio in the 4 pole motors is 0.05-0.1.
Answer: c
Explanation: The transformation ratio in 2 pole motors is 0.1-0.25. The transformation
ratio in the 4 pole motors is 0.05-0.1.
See lessFor what outputs are the 2 pole machines made use of?
Answer: b Explanation: The 2 pole machines are made use of when the output is below 200 W. The 4 pole machines are made use of when the output is above 200 W.
Answer: b
Explanation: The 2 pole machines are made use of when the output is below 200 W.
The 4 pole machines are made use of when the output is above 200 W.
See lessWhat is the value of the specific electric loading for the continuous duty motor type?
Answer: b Explanation: The specific electric loading for continuous duty motor type is 6000-9000 A per m. The specific electric loading for power rating above 100 W but below 200 W is 8000-11000 A per m and the specific electric loading for power rating above 200 W but below 750 W is 12000-20000 A pRead more
Answer: b
Explanation: The specific electric loading for continuous duty motor type is 6000-9000 A
per m. The specific electric loading for power rating above 100 W but below 200 W is
8000-11000 A per m and the specific electric loading for power rating above 200 W but
below 750 W is 12000-20000 A per m.
See lessWhat is the specific magnetic loading for the motors having output less than 100 W?
Answer: d Explanation: The specific magnetic loading for the output below 100 W is 0.25-0.35 T and the specific magnetic loading for the continuous duty motors is 0.3-0.4 T and the specific magnetic loading for the short time duty motors is 1.3-1.5 T.
Answer: d
Explanation: The specific magnetic loading for the output below 100 W is 0.25-0.35 T
and the specific magnetic loading for the continuous duty motors is 0.3-0.4 T and the
specific magnetic loading for the short time duty motors is 1.3-1.5 T.
See lessWhat is the formula for the pole pitch in the universal commutator motor?
Answer: c Explanation: The diameter and the number of poles are calculated. On substitution, the pole pitch of the universal commutator motor is obtained.
Answer: c
Explanation: The diameter and the number of poles are calculated. On substitution, the
pole pitch of the universal commutator motor is obtained.
See less.What is the formula of the pole arc of the universal commutator motor?
Answer: b Explanation: Firstly the ratio of armature axial length to armature diameter is calculated. Next, the pole pitch is calculated and on addition of both the terms the pole arc is obtained.
Answer: b
Explanation: Firstly the ratio of armature axial length to armature diameter is calculated.
Next, the pole pitch is calculated and on addition of both the terms the pole arc is
obtained.
See lessHow many steps are present in the calculation of the design of rotor of reluctance motors?
Answer: a Explanation: There are 4 steps involved in the design of rotor of reluctance motor. They are rotor diameter calculation, height of rotor core, mmf for magnetic circuit, saturation coefficient of motor.
Answer: a
Explanation: There are 4 steps involved in the design of rotor of reluctance motor. They
are rotor diameter calculation, height of rotor core, mmf for magnetic circuit, saturation
coefficient of motor.
See lessHow many steps are involved in the design of performance parameters?
Answer: c Explanation: There are 7 steps involved in the design of the performance parameters. They are no load current, height of steel stator teeth, weight of steel in the stator core, copper loss in the stator winding under no load, active resistance and leakage reactance, active component of noRead more
Answer: c
Explanation: There are 7 steps involved in the design of the performance parameters.
They are no load current, height of steel stator teeth, weight of steel in the stator core,
copper loss in the stator winding under no load, active resistance and leakage
reactance, active component of no load current, starting torque of 3 phase reluctance
motor.
See lessHow many design steps are involved in the determination of the losses and efficiency?
Answer: b Explanation: There are 3 steps involved in the determination of the losses and efficiency. They are copper loss in stator winding, iron loss in stator steel, mechanical loss in the motor.
Answer: b
Explanation: There are 3 steps involved in the determination of the losses and efficiency.
They are copper loss in stator winding, iron loss in stator steel, mechanical loss in the
motor.
See lessWhat is the formula for the slot pitch factor in design of rotors?
Answer: c Explanation: First the rotor diameter and the number of rotor slots are first calculated. On substitution the slot pitch factor can be obtained.
Answer: c
Explanation: First the rotor diameter and the number of rotor slots are first calculated. On
substitution the slot pitch factor can be obtained.
See less