GATE 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

Unbalanced forces are the forces which causes change in motion of the object. It sets the object in motion and may cause the object to move. If the object is already in motion, it changes the speed and direction of the object.

Working capital, also known as net working capital, is the difference between a company’s current assets, like cash, accounts receivable and inventories of raw materials and finished goods, and its current liabilities, like accounts payable.

Working Capital = Current Assets - Current Liabilities

Burning gasoline is the only process that involving in a chemical change in the given options. A chemical change is a change in the starting substances that are called reactants from the formed new substances that are called products.