Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
What is the product of the ratio of the current and the useful flux per pole?
Answer: d Explanation: First the product of useful flux per pole due to upper limit current and lower limit current and then the product of useful flux per pole due to lower limit current and upper limit current. On substitution the product of ratio of current and useful per pole is obtained.
Answer: d
See lessExplanation: First the product of useful flux per pole due to upper limit current and lower limit current and then the product of useful flux per pole due to lower limit current and upper limit current. On substitution the product of ratio of current and useful per pole is obtained.
What happens when the starter takes up metallic resistance?
Answer: d Explanation: The starter actually picks up either liquid rheostat or metallic resistance during its operation. The starter takes up metallic resistance when the resistance is to be varied in steps. When taken with resistance steps, the current fluctuated between upper and lower limits.
Answer: d
See lessExplanation: The starter actually picks up either liquid rheostat or metallic resistance during its operation. The starter takes up metallic resistance when the resistance is to be varied in steps. When taken with resistance steps, the current fluctuated between upper and lower limits.
.The starter take up metallic resistance when the resistance should not be varied in steps.
Answer: b Explanation: The starter actually picks up either liquid rheostat or metallic resistance during its operation. The starter takes up metallic resistance when the resistance is to be varied in steps.
Answer: b
See lessExplanation: The starter actually picks up either liquid rheostat or metallic resistance
during its operation. The starter takes up metallic resistance when the resistance is to be varied in steps.
.When does the starter take up liquid rheostat?
Answer: b Explanation: The starter actually picks up either liquid rheostat or metallic resistance during its operation. The starter takes up liquid rheostat during the situation where the resistance is gradually varied.
Answer: b
See lessExplanation: The starter actually picks up either liquid rheostat or metallic resistance
during its operation. The starter takes up liquid rheostat during the situation where the resistance is gradually varied.
What is the relation of the current with the starting torque in the starter concept?
Answer: d Explanation: The main function of the starter is to prevent excessive current flow. At the same time it should allow current to produce good or high starting torque.
Answer: d
See lessExplanation: The main function of the starter is to prevent excessive current flow. At the same time it should allow current to produce good or high starting torque.
What is the work of the starter with respect to the mechanical stress?
Answer: b Explanation: The main function of the starter is to prevent the excessive current at the starting. The other work of the starter is to restrict the large mechanical stress from acting on the machines.
Answer: b
See lessExplanation: The main function of the starter is to prevent the excessive current at the
starting. The other work of the starter is to restrict the large mechanical stress from
acting on the machines.
What is the function of the motor starter with respect to current?
Answer: d Explanation: There are varied type of starters which vary among themselves according to the function. The main function is to prevent the excessive current at the starting.
Answer: d
See lessExplanation: There are varied type of starters which vary among themselves according
to the function. The main function is to prevent the excessive current at the starting.
.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
See lessExplanation: 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.
What 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
See lessExplanation: The diameter and the number of poles are calculated. On substitution, the pole pitch of the universal commutator motor is obtained.
What 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
See lessExplanation: 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.