Basic Quantities in AC
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PHXII07:ALTERNATING CURRENT

356106 A multimeter reads a voltage of a certain \(A\).\(C\). source as 100\(V\). What is the peak value of voltage of \(A\).\(C\). source ?

1 \(141.4\,{\rm{V}}\)
2 \(200\,{\rm{V}}\)
3 \(400\,{\rm{V}}\)
4 \(100\,{\rm{V}}\)
KCET - 2014
PHXII07:ALTERNATING CURRENT

356107 When a voltage measuring device is connected to \(AC\) mains, the meter shows the steady input voltage of 220 \(V\). This means

1 The meter is calibrated to read \(\sqrt { < {v^2} > } .\)
2 The pointer of the meter is stuck by some mechanical defect.
3 Input voltage cannot be \(AC\) voltage, but a \(DC\) voltage.
4 Maximum input voltage is \(220V\)
PHXII07:ALTERNATING CURRENT

356108 An \(A C\) ammeter is used to measure current in a circuit. When a given direct current passes through the circuit, the \(A C\) ammeter reads \(3 A\). When another alternating current passes through the circuit, the \(A C\) ammeter reads \(4 A\). Then, the reading of this ammeter, if \(D C\) and \(A C\) flow through the circuit simultaneously, is

1 \(3\;A\)
2 \(4\;A\)
3 \(7\;A\)
4 \(5\;A\)
AIIMS - 2011
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PHXII07:ALTERNATING CURRENT

356106 A multimeter reads a voltage of a certain \(A\).\(C\). source as 100\(V\). What is the peak value of voltage of \(A\).\(C\). source ?

1 \(141.4\,{\rm{V}}\)
2 \(200\,{\rm{V}}\)
3 \(400\,{\rm{V}}\)
4 \(100\,{\rm{V}}\)
KCET - 2014
PHXII07:ALTERNATING CURRENT

356107 When a voltage measuring device is connected to \(AC\) mains, the meter shows the steady input voltage of 220 \(V\). This means

1 The meter is calibrated to read \(\sqrt { < {v^2} > } .\)
2 The pointer of the meter is stuck by some mechanical defect.
3 Input voltage cannot be \(AC\) voltage, but a \(DC\) voltage.
4 Maximum input voltage is \(220V\)
PHXII07:ALTERNATING CURRENT

356108 An \(A C\) ammeter is used to measure current in a circuit. When a given direct current passes through the circuit, the \(A C\) ammeter reads \(3 A\). When another alternating current passes through the circuit, the \(A C\) ammeter reads \(4 A\). Then, the reading of this ammeter, if \(D C\) and \(A C\) flow through the circuit simultaneously, is

1 \(3\;A\)
2 \(4\;A\)
3 \(7\;A\)
4 \(5\;A\)
AIIMS - 2011
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PHXII07:ALTERNATING CURRENT

356106 A multimeter reads a voltage of a certain \(A\).\(C\). source as 100\(V\). What is the peak value of voltage of \(A\).\(C\). source ?

1 \(141.4\,{\rm{V}}\)
2 \(200\,{\rm{V}}\)
3 \(400\,{\rm{V}}\)
4 \(100\,{\rm{V}}\)
KCET - 2014
PHXII07:ALTERNATING CURRENT

356107 When a voltage measuring device is connected to \(AC\) mains, the meter shows the steady input voltage of 220 \(V\). This means

1 The meter is calibrated to read \(\sqrt { < {v^2} > } .\)
2 The pointer of the meter is stuck by some mechanical defect.
3 Input voltage cannot be \(AC\) voltage, but a \(DC\) voltage.
4 Maximum input voltage is \(220V\)
PHXII07:ALTERNATING CURRENT

356108 An \(A C\) ammeter is used to measure current in a circuit. When a given direct current passes through the circuit, the \(A C\) ammeter reads \(3 A\). When another alternating current passes through the circuit, the \(A C\) ammeter reads \(4 A\). Then, the reading of this ammeter, if \(D C\) and \(A C\) flow through the circuit simultaneously, is

1 \(3\;A\)
2 \(4\;A\)
3 \(7\;A\)
4 \(5\;A\)
AIIMS - 2011
Join With Us for More Updates