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Lap winding is composed of any even number of conductors.

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Answer :

In D.C. generators, lap winding is used for low voltage, high current.

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Answer :

In the case of lap winding resultant pitch is difference of front and back pitches.

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In lap winding, the number of brushes is always same as the number of poles.

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Description :

A 36 slot, 4 -pole, dc machine has a simplex lap winding with two conductors per slot. The back pitch and front pitch adopted could be respectively

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A 36 slot, 4 -pole, dc machine has a simplex lap winding with two conductors per slot. The back pitch and front pitch adopted could be respectively 19,17

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Wave winding is composed of that even number which is exact multiple of poles + 2.

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In case of D.C. machine winding, number of commutator segments is equal to number of armature coils.

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The resistance of armature winding depends on length of conductor, cross-sectional area of the conductor, number of conductors.

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Description :

State advantages of short pitch winding over full pitch winding in alternators. 

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Advantages of Short Pitch Winding over Full Pitch Winding in Alternators: 1) Short pitching reduces the amount of copper needed for end connection when compared with full pitched coil. 2) They ... reduced, thereby increasing the efficiency. 4) The power quality of generated emf is improved. 

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279 views 1 answer
Description :

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It is the wire wound around a aluminium metal it is found commonly in transformers or motors

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Description :

Damper winding in a synchronous motor

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Damper winding in a synchronous motor Serves to start the motor.

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Description :

A certain transformer has 200 turns in the primary winding, 50 turns in the secondary winding and 120 volts applied to the primary. What is the voltage across the secondary?  (A) 30 Volts (B) 480 Volts (C) 120 Volts (D) 60 Volts

Answer :

A certain transformer has 200 turns in the primary winding, 50 turns in the secondary winding and 120 volts applied to the primary. What is the voltage across the secondary?  (A) 30 Volts (B) 480 Volts (C) 120 Volts (D) 60 Volts

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Description :

A _________ is used to measure the stator % winding temperature of the generator.  (A) Thermocouple (B) Pyrometer (C) Resistance thermometer (D) Thermometer

Answer :

A Resistance thermometer is used to measure the stator % winding temperature of the generator. 

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Description :

A 200 V dc shunt motor is running at 1000 rpm and drawing a current of 10 A. Its armature winding resistance is 2 Ohm. It. is braked by plugging. The resistance to be connected in series with armature to restrict armature current to 10 A, is

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A 200 V dc shunt motor is running at 1000 rpm and drawing a current of 10 A. Its armature winding resistance is 2 Ohm. It. is braked by plugging. The resistance to be connected in series with armature to restrict armature current to 10 A, is 36 Ohm

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Description :

Damper winding is provided in 3 phase synchronous motors to :

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Damper winding is provided in 3 phase synchronous motors to : provide starting torque and prevent hunting

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Description :

Aluminium is not used as winding wire for the armature of a dc machine because  (1) aluminium has low resistivity (2) a large winding space is taken by aluminium conductors and creates jointing problems (3) the thermal conductivity of aluminium is low (4) aluminium has low conductivity as compared to copper

Answer :

Aluminium is not used as winding wire for the armature of a dc machine because  (2) a large winding space is taken by aluminium conductors and creates jointing problems (3) the thermal conductivity of aluminium is low (4) aluminium has low conductivity as compared to copper

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Description :

Answer :

In D.C. machines fractional pitch winding is used to reduce the sparking.

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The starting winding of a single-phase motor is placed in stator.

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If starting winding of a single-phase induction motor is left in the circuit, it will draw excessive current and overheat.

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Answer :

Starting winding of a single phase motor of a refrigerator is disconnected from the circuit by means of a magnetic relay.

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Centrifugal switch disconnects the auxiliary winding of the motor at about 70 to 80 percent of synchronous speed.

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The purpose of stator winding in the compensated repulsion motor is to improve power factor and provide better speed regulation.

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In split phase motor main winding is of thick wire placed at the bottom of the slots.

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In A.C. series motor compensating winding is employed to reduce sparking at the brushes.

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Description :

Answer :

In split-phase motor auxiliary winding is of thin wire placed at the top of the slots.

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Description :

The running winding of a single phase motor on testing with meggar is found to be ground. Most probable location of the ground will be?

Answer :

The running winding of a single phase motor on testing with meggar is found to be ground. Most probable location of the ground will be at the slot edge where coil enters or comes out of the slot.

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Description :

Answer :

A centrifugal switch is used to disconnect starting winding when motor has picked up about 50 to 70 per cent of rated speed.

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Answer :

In a capacitor start motor, the phase displacement between starting and running winding can be nearly 90°.

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In a capacitor start and run motors the function of the running capacitor in series with the auxiliary winding is to improve power factor.

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Answer :

In a split phase motor, the running winding should have low resistance and high inductance.

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If the field winding of an unloaded salient pole synchronous motor is open circuited, the motor will stop.

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Description :

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The short circuit in any winding of the transformer is the result of impulse voltage.

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Primary winding of a transformer could either be a low voltage or high voltage winding.

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 Sandwich type winding is used in 3 phase shell-type transformer.

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The damping winding in synchronous motor is generally used to?

Answer :

The damping winding in synchronous motor is generally used to provide starting torque and prevent hunting.

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In synchronous motor, does the winding losses vary with load?

Answer :

No, in the synchronous motor the winding losses do not vary with load.

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yes High Voltage side of Transformer winding have more number of turns. and low voltage side of Transformer winding have less number of turns.

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Answer :

In case of a 4-pole D.C. generator provided with a two layer lap winding with sixteen coils, the pole pitch will be 8.

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Number of commutator bars for a 4-pole, 2-layer, DC lap winding with 24 slots and one conductor per layer is (A) 48 (B) 24 (C) 192 (D) 96

Answer :

Number of commutator bars for a 4-pole, 2-layer, DC lap winding with 24 slots and one conductor per layer is 24

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The stator of a 3 phase, 10 pole induction motor possesses 120 slots. If a lap winding is used, calculate the coil pitch, if the coil width extends from slot 1 to slot 11.  (A) 72.12% (B) 83.30% (C) 12% (D) 42% 

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Description :

A cumulatively compounded d.c. generator is supplying 20 A at 200 V. If the series field winding is short circuited, the terminal voltage will (a) remain unaltered (b) rise to 220 V (c) shoot up to a very high value (d) become less than 200 V 

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Description :

Answer :

In a D.C. generator in case the resistance of the field winding is increased, then output voltage will decrease.

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Babies are born with 300 bones, but by adulthood the number is reduced to 206. The reason for this is that many of the bones of children are composed of smaller component bones that are not yet fused like those in the skull. This makes it easier for the baby to pass through the birth canal. The bones harden and fuse as the children grow.

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The Parliament in India is composed of (A) Lok Sabha & Rajya Sabha (B) Lok Sabha, Rajya Sabha & Vice President (C) Lok Sabha, Rajya Sabha & President (D) Lok Sabha, Rajya Sabha with their Secretariats

Answer :

Answer: A The Indian Parliament is the supreme legislative body in India. Parliament is composed of: 1. The President of India 2. Lok Sabha (House of the People) 3. Rajya Sabha ( ... Model of governance, the president rarely exercises such powers without the advice of the prime minister. 

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An E-mail address is composed of: (A) two parts (B) three parts (C) four parts (D) five parts 

Answer :

(A) two parts

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1. What will be best colours for a Sun umbrella? 2. What is deficit financing? 3. Which is the official language of East African Development Bank? 4. In which State are Namchik-Namphuk Coalfields located? 5. Tulsidas composed his Ramcharitamanasa' in the reign of which ruler? 6. In the human body which sturcture is ... Padma Bhushan? 19. The Earth turns through 360° in 24 hours. Howmuch time does Each 15° longitude represent? 20. Which dynasty's founder was an elected king?

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Answer : 1. White on top and black on inside 2. Spending in excess of revenue 3. French 4. Arunachal Pradesh 5. Akbar 6. Large intestine 7. Public Accounts Committee 8. 5 9. Jodhpur 10. Atharva Veda ... of Cancer 15. Upagupta 16. Concave mirror 17. Pratibha Ray 18. Arun Shourie 19. One hour 20. Pala

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A level of atmosphere which is composed partly of electrons and positive ions is called (1) Troposphere (2) Ionosphere (3) Stratosphere (4) Mesosphere

Answer :

Ionosphere

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The majority of Earth’s crust is composed of which rock ? (1) Igneous (2)Metamorphic (3) Sedimentary (4)Carbonate 

Answer :

Igneous

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Who composed the Air for the G string (init and name)

Answer :

JS Bach

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Who composed the Brandeberg concertos full names

Answer :

Johan Sebastian Bach

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A three-phase transformer, connected in star-delta, is composed of three single-phase transformers, each rated 127/ 13.2 kV. The line-to-line voltage ratio for the three-phase transformer is: A) 220 / 13.2 kV B) 127 / 13.2 kV C) 127 / 220 kV D) 220 / 220 kV

Answer :

A three-phase transformer, connected in star-delta, is composed of three single-phase transformers, each rated 127/ 13.2 kV. The line-to-line voltage ratio for the three-phase transformer is: 220 / 13.2 kV 

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