Electrical Machines Oil is provided in an oil filled transformer for lubrication. both cooling and insulation. insulating. cooling. lubrication. both cooling and insulation. insulating. cooling. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What type of dielectric material is used in capacitors used for fans and for power factor correction? Mica. Glass. Vacuum. Oil impregnated paper. Mica. Glass. Vacuum. Oil impregnated paper. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous motor torque or load angle δ ------------- with increase in load decreases remains unaffected increases None of these decreases remains unaffected increases None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V, DC shunt motor is operating at a speed of 1440 rpm. The armature resistance is 1.0 Ω and armature current is 10 A. of the excitation of the machine is reduced by 10%, the extra resistance to be put in the armature circuit to maintain the same speed and torque will be 1.79 Ω 2 .1 Ω 3.1 Ω 1.8 9 Ω 1.79 Ω 2 .1 Ω 3.1 Ω 1.8 9 Ω ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which machine is used for battery charging? DC series generator. DC shunt generator. Compounded DC generator. None of these. DC series generator. DC shunt generator. Compounded DC generator. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statements are correct ? A small value of leakage reactance will increase the maximum power output of motor. The leakage reactance of the induction motor should be small. None of these Both 1 and 2. A small value of leakage reactance will increase the maximum power output of motor. The leakage reactance of the induction motor should be small. None of these Both 1 and 2. ANSWER DOWNLOAD EXAMIANS APP
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