A1 A good transformer should have A2 a) high efficiency and low regulation c) low efficiency and high regulation A3 M4 1

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A1 A Good Transformer Should Have A2 A High Efficiency And Low Regulation C Low Efficiency And High Regulation A3 M4 1 1 (46.35 KiB) Viewed 21 times

A1 A good transformer should have A2 a) high efficiency and low regulation c) low efficiency and high regulation A3 M4 112 AS A6 A7 AB A9 2 Three identical coils, each of R-82 and X-6 are connected in star to a three-phase 400 V. 50 Hz supply. The impedance of the coil is 22 a) 5 b) 14 A11 In DC generator, the commutator is made up of a) carbon b) aluminum A12 In DC generator, compensating windings are connected in a) parallel with the armature c) parallel with the field Lap winding is suitable for a) low voltage and low current c) high voltage and low current EEPW2251: Electrical Power Technology Two-point starter is used for DC a) series b) shunt In a 3-phase but displaced from each other by 120° apart. A10 In the construction of DC machine. <) 100 Fill in the blanks The core type transformer has c) copper b) low efficiency and low regulation d) high efficiency and high regulation c) cumulative compound d) differential compound A 4 pole, three-phase induction motor operates from a supply whose frequency is 50 Hz. The synchronous speed of the motor is rpen a) 3000 b) 1000 <) 1500 The secondary winding of the potential transformer having DC generator. b) low voltage and high current d) high voltage and high current b) series with the armature d) series with the field d) 10 d) graphite supply, all the three voltages are of same magnitude Page 2 of 10 magnetic circuit. In a 3-phase short circuited at both the ends by means of two heavy copper end-rings. d) 750 houses all the parts of the generator. number of turns. induction motor, rotor bars are permanently