CAT Questions

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D.C series motor both armature and feild connected in series at noload condition current drawn by the motor is zero Ia=0 flux also zero. but very small amount of flux avalible because of residual magnetism

in series motor speed  =  N α Eb/Φ Eb almost conistant

                                 =    N α 1/Φ

At no load condition d.c series can be run as dangerously very high so d.c series motor
operated at load condition only

We know that, largest producer of tea is China and largest producer of sugar is Brazil. So we can violate options A, C and D.

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South Africa's President Cyril Ramaphosa will be India's Republic Day chief guest in 2019.

Indian Ocean is between Africa and Australia and separates them.

Nilambar Acharya has been appointed as the new Nepalese ambassador to India.