Basic Quantities in AC
PHXII07:ALTERNATING CURRENT

356101 If instantaneous current is given by \(i = 4\cos (\omega t + \phi )\) amperes, then the \(r\).\(m\).\(s\). value of current is

1 \(Zero\,ampere\)
2 \(4\,ampere\)
3 \(2\sqrt 2 \,ampere\)
4 \(4\sqrt 2 \,ampere\)
PHXII07:ALTERNATING CURRENT

356102 The ratio of peak value and rms value of alternating current is

1 1
2 \(\dfrac{1}{2}\)
3 \(\sqrt{2}\)
4 \(\dfrac{1}{\sqrt{2}}\)
PHXII07:ALTERNATING CURRENT

356103 The peak value of \(A C\) is \(2\sqrt 2 \,A\). Its apparent value will be

1 \(1\;A\)
2 \(2\;A\)
3 \(4\;A\)
4 Zero
PHXII07:ALTERNATING CURRENT

356104 The frequency of an alternating voltage is 50 cycles/sec and its amplitude is 120 \(V\). Then the \(r\).\(m\).\(s\) value of voltage is:

1 \(101.3\,V\)
2 \(84.8\,V\)
3 \(70.7\,V\)
4 \(56.5\,V\)
PHXII07:ALTERNATING CURRENT

356105 An alternating voltage given as \(V = 100\sqrt 2 \sin 100t\) volt is applied to a capacitor of \(1\mu F.\)The current reading of the ammeter will be equal to____\(mA\)

1 \(20\)
2 \(80\)
3 \(10\)
4 \(40\)
PHXII07:ALTERNATING CURRENT

356101 If instantaneous current is given by \(i = 4\cos (\omega t + \phi )\) amperes, then the \(r\).\(m\).\(s\). value of current is

1 \(Zero\,ampere\)
2 \(4\,ampere\)
3 \(2\sqrt 2 \,ampere\)
4 \(4\sqrt 2 \,ampere\)
PHXII07:ALTERNATING CURRENT

356102 The ratio of peak value and rms value of alternating current is

1 1
2 \(\dfrac{1}{2}\)
3 \(\sqrt{2}\)
4 \(\dfrac{1}{\sqrt{2}}\)
PHXII07:ALTERNATING CURRENT

356103 The peak value of \(A C\) is \(2\sqrt 2 \,A\). Its apparent value will be

1 \(1\;A\)
2 \(2\;A\)
3 \(4\;A\)
4 Zero
PHXII07:ALTERNATING CURRENT

356104 The frequency of an alternating voltage is 50 cycles/sec and its amplitude is 120 \(V\). Then the \(r\).\(m\).\(s\) value of voltage is:

1 \(101.3\,V\)
2 \(84.8\,V\)
3 \(70.7\,V\)
4 \(56.5\,V\)
PHXII07:ALTERNATING CURRENT

356105 An alternating voltage given as \(V = 100\sqrt 2 \sin 100t\) volt is applied to a capacitor of \(1\mu F.\)The current reading of the ammeter will be equal to____\(mA\)

1 \(20\)
2 \(80\)
3 \(10\)
4 \(40\)
PHXII07:ALTERNATING CURRENT

356101 If instantaneous current is given by \(i = 4\cos (\omega t + \phi )\) amperes, then the \(r\).\(m\).\(s\). value of current is

1 \(Zero\,ampere\)
2 \(4\,ampere\)
3 \(2\sqrt 2 \,ampere\)
4 \(4\sqrt 2 \,ampere\)
PHXII07:ALTERNATING CURRENT

356102 The ratio of peak value and rms value of alternating current is

1 1
2 \(\dfrac{1}{2}\)
3 \(\sqrt{2}\)
4 \(\dfrac{1}{\sqrt{2}}\)
PHXII07:ALTERNATING CURRENT

356103 The peak value of \(A C\) is \(2\sqrt 2 \,A\). Its apparent value will be

1 \(1\;A\)
2 \(2\;A\)
3 \(4\;A\)
4 Zero
PHXII07:ALTERNATING CURRENT

356104 The frequency of an alternating voltage is 50 cycles/sec and its amplitude is 120 \(V\). Then the \(r\).\(m\).\(s\) value of voltage is:

1 \(101.3\,V\)
2 \(84.8\,V\)
3 \(70.7\,V\)
4 \(56.5\,V\)
PHXII07:ALTERNATING CURRENT

356105 An alternating voltage given as \(V = 100\sqrt 2 \sin 100t\) volt is applied to a capacitor of \(1\mu F.\)The current reading of the ammeter will be equal to____\(mA\)

1 \(20\)
2 \(80\)
3 \(10\)
4 \(40\)
PHXII07:ALTERNATING CURRENT

356101 If instantaneous current is given by \(i = 4\cos (\omega t + \phi )\) amperes, then the \(r\).\(m\).\(s\). value of current is

1 \(Zero\,ampere\)
2 \(4\,ampere\)
3 \(2\sqrt 2 \,ampere\)
4 \(4\sqrt 2 \,ampere\)
PHXII07:ALTERNATING CURRENT

356102 The ratio of peak value and rms value of alternating current is

1 1
2 \(\dfrac{1}{2}\)
3 \(\sqrt{2}\)
4 \(\dfrac{1}{\sqrt{2}}\)
PHXII07:ALTERNATING CURRENT

356103 The peak value of \(A C\) is \(2\sqrt 2 \,A\). Its apparent value will be

1 \(1\;A\)
2 \(2\;A\)
3 \(4\;A\)
4 Zero
PHXII07:ALTERNATING CURRENT

356104 The frequency of an alternating voltage is 50 cycles/sec and its amplitude is 120 \(V\). Then the \(r\).\(m\).\(s\) value of voltage is:

1 \(101.3\,V\)
2 \(84.8\,V\)
3 \(70.7\,V\)
4 \(56.5\,V\)
PHXII07:ALTERNATING CURRENT

356105 An alternating voltage given as \(V = 100\sqrt 2 \sin 100t\) volt is applied to a capacitor of \(1\mu F.\)The current reading of the ammeter will be equal to____\(mA\)

1 \(20\)
2 \(80\)
3 \(10\)
4 \(40\)
PHXII07:ALTERNATING CURRENT

356101 If instantaneous current is given by \(i = 4\cos (\omega t + \phi )\) amperes, then the \(r\).\(m\).\(s\). value of current is

1 \(Zero\,ampere\)
2 \(4\,ampere\)
3 \(2\sqrt 2 \,ampere\)
4 \(4\sqrt 2 \,ampere\)
PHXII07:ALTERNATING CURRENT

356102 The ratio of peak value and rms value of alternating current is

1 1
2 \(\dfrac{1}{2}\)
3 \(\sqrt{2}\)
4 \(\dfrac{1}{\sqrt{2}}\)
PHXII07:ALTERNATING CURRENT

356103 The peak value of \(A C\) is \(2\sqrt 2 \,A\). Its apparent value will be

1 \(1\;A\)
2 \(2\;A\)
3 \(4\;A\)
4 Zero
PHXII07:ALTERNATING CURRENT

356104 The frequency of an alternating voltage is 50 cycles/sec and its amplitude is 120 \(V\). Then the \(r\).\(m\).\(s\) value of voltage is:

1 \(101.3\,V\)
2 \(84.8\,V\)
3 \(70.7\,V\)
4 \(56.5\,V\)
PHXII07:ALTERNATING CURRENT

356105 An alternating voltage given as \(V = 100\sqrt 2 \sin 100t\) volt is applied to a capacitor of \(1\mu F.\)The current reading of the ammeter will be equal to____\(mA\)

1 \(20\)
2 \(80\)
3 \(10\)
4 \(40\)