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 formula for the winding height in the design of the field windings?
Answer: d Explanation: The height of the pole and the height f the shoe is calculated. Next the space taken by the spool, flanges is calculated and the winding height is obtained.
Answer: d
Explanation: The height of the pole and the height f the shoe is calculated. Next the space taken by the spool, flanges is calculated and the winding height is obtained.
See lessWhat is the formula for the voltage across each field coil?
Answer: a Explanation: The exciter voltage value is first set up for the particular machine. Then with the number of poles, the voltage across each field coil is calculated.
Answer: a
See lessExplanation: The exciter voltage value is first set up for the particular machine. Then with the number of poles, the voltage across each field coil is calculated.
The field winding should be designed for a voltageThe field winding should be designed for a voltage from 15-20% less than the exciter voltage.
Answer: a Explanation: The field winding should be designed for a voltage from 15-20% less than the exciter voltage. This is because to allow for the drop in voltage between field and exciter and to allow for variations in the reluctance of the magnetic field.
Answer: a
Explanation: The field winding should be designed for a voltage from 15-20% less than the exciter voltage. This is because to allow for the drop in voltage between field and exciter and to allow for variations in the reluctance of the magnetic field.
See lessWhat is the range of the exciter voltage in the field coils?
Answer: d Explanation: The minimum value of the exciter voltage across the field coils is 50 V. The maximum value of the exciter voltage is 400 V.
Answer: d
See lessExplanation: The minimum value of the exciter voltage across the field coils is 50 V. The maximum value of the exciter voltage is 400 V.
What is the range of the pressure under which the field coils are consolidated?
Answer: c Explanation: The minimum pressure under which the field coils are consolidated is 4 MN per m2 . The maximum value of the pressure under which the field coils are 12 MN per m2 .
Answer: c
Explanation: The minimum pressure under which the field coils are consolidated is 4 MN per m2 . The maximum value of the pressure under which the field coils are 12 MN per m2 .
See lessWhat is the lamination material of the pole body and the thickness of the pole body insulation?
Answer: b Explanation: The pole body insulation is made up of the epoxy resin laminations. The thickness of the pole body insulation is 4 mm thick.
Answer: b
Explanation: The pole body insulation is made up of the epoxy resin laminations. The thickness of the pole body insulation is 4 mm thick.
See lessWhat is the thickness of the layers of Class F insulation and what material is layers made of?
Answer: c Explanation: The thickness of the layers is 0.18 mm. The layers are made up of thick epoxy treated asbestos paper.
Answer: c
Explanation: The thickness of the layers is 0.18 mm. The layers are made up of thick epoxy treated asbestos paper.
See lessHow many layers does the machine with Class F insulation consists of?
Answer: b Explanation: The machines with Class B insulation consists of 2 layers. The machines with Class F insulation consists of 3 layers.
Answer: b
Explanation: The machines with Class B insulation consists of 2 layers. The machines with Class F insulation consists of 3 layers.
See lessDuring the pressing and consolidation by how much is the thickness of the interturn insulation reduced to?
Answer: a Explanation: The thickness of the interturn insulation before the pressing and consolidation is 0.36 mm. After the process of pressing and consolidation the thickness of the interturn insulation is reduced to 0.26 mm.
Answer: a
See lessExplanation: The thickness of the interturn insulation before the pressing and
consolidation is 0.36 mm. After the process of pressing and consolidation the thickness of the interturn insulation is reduced to 0.26 mm.
Current is passed simultaneously through the conductors to raise the temperature of the field coil.
Answer: a Explanation: The current is passed simultaneously through the conductors to raise the temperature of the field coil. The temperature should be high enough so that polymerization of interturn insulation is complete.
Answer: a
Explanation: The current is passed simultaneously through the conductors to raise the temperature of the field coil. The temperature should be high enough so that polymerization of interturn insulation is complete.
See less