Electrical Machines If the full load speed of 3-phase, 50Hz induction motor is 950 rpm, what is its half load speed nearly equals to? 940 rpm 1000 rpm 950 rpm 975 rpm 940 rpm 1000 rpm 950 rpm 975 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC series generator, the terminal voltage with increase in load will remain nearly constant increase gradually and then stay at rated voltage decrease increase to rated voltage and then may decrease remain nearly constant increase gradually and then stay at rated voltage decrease increase to rated voltage and then may decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Diverters are used only in None of these either of these series motors shunt motors None of these either of these series motors shunt motors ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Unbalance 3 - Φ stator currents cause All of these double frequency currents in the rotor. heating of rotor. vibrations. All of these double frequency currents in the rotor. heating of rotor. vibrations. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous machine, if φ is the flux per pole and f is the frequency of the emf induced E then E ∝ φf E ∝ φ/f E ∝ f/φ E ∝ 1/(φf) E ∝ φf E ∝ φ/f E ∝ f/φ E ∝ 1/(φf) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following induction motor has maximum speed? 6 pole. 8 pole. 2 pole. 4 pole. 6 pole. 8 pole. 2 pole. 4 pole. ANSWER DOWNLOAD EXAMIANS APP
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