Electrical Machines Commutator pitches of duplex and simplex lap windings are respectively 4 and 2 2 and 2 4 ang 1 2 and 1 4 and 2 2 and 2 4 ang 1 2 and 1 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 240 V DC series motor takes 40 A when giving its rated output at 1500 rpm. Its resistance is 0.3 ohms. The value of resistance which must be added to obtain rated torque at 1000 rpm is 5.7 ohms. 2.2 ohms. 6 ohms. 1.9 ohms. 5.7 ohms. 2.2 ohms. 6 ohms. 1.9 ohms. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In speed control of DC shunt motor by varying field flux, what may be the value of field regulator? 2 ohm. 0.2 ohm 100 ohm 10 ohm 2 ohm. 0.2 ohm 100 ohm 10 ohm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Iron losses in a DC machine are independent of variation in load. voltage. speed and voltage. speed. load. voltage. speed and voltage. speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A short-shunt cumulatively-compounded dc generator builds up a voltage of 220 V at no load at rated speed. If it is operated as a differentially compounded generator, other things remaining the same, it would build up somewhat less than 220 V 6 V 220 V more than 220 V somewhat less than 220 V 6 V 220 V more than 220 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For 250 volt DC Shunt Motor the armature and field resistance are 0.5 ohm and 250 ohm respectively. What will be the back e.m.f. produced when it takes a load current of 21A. 220 V. 240 V. 280 V. 150 V. 220 V. 240 V. 280 V. 150 V. ANSWER DOWNLOAD EXAMIANS APP
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