Electrical Machines In case of a DC Shunt motor if the load is decreased to some extent, what will happen to its speed? The speed will remains almost constant. The speed will increase abruptly. The speed will increase gradually. The speed will increase in proportion to reduction in load. The speed will remains almost constant. The speed will increase abruptly. The speed will increase gradually. The speed will increase in proportion to reduction in load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a DC motor can be determent by Amperes law. Flemings left hand rule. Lenzs law. Flemings right hand rule. Amperes law. Flemings left hand rule. Lenzs law. Flemings right hand rule. 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 1.8 9 Ω 1.79 Ω 2 .1 Ω 3.1 Ω 1.8 9 Ω 1.79 Ω 2 .1 Ω 3.1 Ω ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A cumulatively compounded dc motor delivers rated load power at rated speed. If the series field is short-circuited, then Ia increases and ωm decreses both decrese Ia remains constant but ωm increase both armature current Ia and speed ωm increase Ia increases and ωm decreses both decrese Ia remains constant but ωm increase both armature current Ia and speed ωm increase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A generator may loose residual magnetism due to vibrations. over excitation. any of these. heating. vibrations. over excitation. any of these. heating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the full form of MNP? Magnetic field neutral pole. Magnetic field neutral plane. Magnetic neutral plane. Magnetic neutral pole. Magnetic field neutral pole. Magnetic field neutral plane. Magnetic neutral plane. Magnetic neutral pole. ANSWER DOWNLOAD EXAMIANS APP
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