Electrical Machines The field divertor resistance for a DC series motor is of order of 0.1 Ω 10 Ω 100 Ω 50 Ω 0.1 Ω 10 Ω 100 Ω 50 Ω ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the mechanical power developed by a DC series motor is maximum? Back emf is equal to applied voltage. Back emf is equal to half the applied voltage. Back emf is equal to zero. None of above. Back emf is equal to applied voltage. Back emf is equal to half the applied voltage. Back emf is equal to zero. None of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a specific open-circuit voltage of a DC generator, the short-circuit electric current will be maximum when it is differentially compounded. separately excited. shunt connected. cumulatively compounded. differentially compounded. separately excited. shunt connected. cumulatively compounded. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the number of poles required, when the frequency is 50Hz and speed of the motor is 500 rpm? 5 12 10 24 5 12 10 24 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature shaft must be able to withstand twisting strains due to transmission of torque. bending moment due to weight of the armature. All of these any unbalanced magnetic pull on the armature core. twisting strains due to transmission of torque. bending moment due to weight of the armature. All of these any unbalanced magnetic pull on the armature core. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Alternator operates on the principle of mutual induction. self induction. electromagnetic induction. self or mutual induction. mutual induction. self induction. electromagnetic induction. self or mutual induction. ANSWER DOWNLOAD EXAMIANS APP
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