NEET UG Alternating Current — practice questions
42 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NEET UG Alternating Current in the app →The peak voltage of Indian household AC at rms $230$ V is approximately:An inductor of $0.1$ H is connected to a $50$ Hz AC source. Its inductive reactance is:In a series LCR circuit, resonance occurs at angular frequency:An ideal transformer with primary $1000$ turns and secondary $50$ turns is fed $230$ V AC. Secondary voltage iThe current driven by an alternating voltage in a circuit is called:The equivalent steady current giving the same average power loss is the:Phase relationships between voltage and current in an ac circuit are shown using:The quantity analogous to resistance for an inductor is called:The opposition offered by a capacitor to alternating current is called:What is the SI unit of inductive reactance?In a purely resistive ac circuit, the voltage and the current are:In a circuit containing an inductor, the current does what relative to the voltage?In a circuit containing a capacitor, the current does what relative to the voltage?At the resonant frequency of a series RLC circuit, the current amplitude is:A current that flows while no power is dissipated is sometimes called a:Why is ac voltage preferred over dc voltage for power distribution?If the secondary coil has more turns than the primary, the transformer is:The household line voltage of 220 V is quoted as which kind of value?What is the approximate peak voltage of a 220 V household supply?A well designed transformer may reach an efficiency of more than:Which transformer loss arises from currents induced in the iron core itself?Which transformer loss arises from repeatedly reversing the magnetisation of the core?The effective value of an alternating current is called its:The household line voltage of 220 V is which kind of value?An inductor in an ac circuit offers:A capacitor in an ac circuit offers:The SI unit of reactance is the:The total opposition of an ac circuit is called its:Alternating voltages are stepped up or down by means of:The rms current equals the dc current that would produce the same:At resonance in a series LCR circuit, the impedance is:At resonance the current amplitude in the circuit is:Besides an inductor, resonance needs the circuit to contain a:The quantity cos of the phase angle is called the:A current that dissipates no power is referred to as:Maximum power is dissipated in a series LCR circuit at:Inductive reactance is directly proportional to the:At the resonant frequency, the two reactances are:A radio is tuned to a station by matching the resonant frequency of:Resonance is described as a phenomenon that is:The impedance of a series LCR circuit at resonance equals:A lagging wattless current is neutralised by adding an equal: