Home Physics Alternating Current Test Online Preparation Mcqs Physics Alternating Current Test Online Preparation Mcqs Physics Alternating Current Test Online Preparation Mcqs With Answers Start Below 123456789101112131415Show paginator Hide paginator 7% Question 1 of 15 1. A 10Ω electric heater is connected to a 220V, 50Hz mains supply. What is the peak value of the potential difference across the heater element?A. 220/√2VB. 110VC. 220√2VD. 220VQuestion 1 of 15 Loading... Question 2 of 15 2. An A.C series circuit contain 4Ω resistance and 3-Ω inductive resistance. The impedance of the circuit is:A. 7/√2ΩB. 1 ΩC. 5 ΩD. 7 ΩQuestion 2 of 15 Loading... Question 3 of 15 3. Natural or resonant frequency of an LC circuit is _________.A. 1/√LCB. 2π√LCC. 1/4π√LCD. 1/2π√LCQuestion 3 of 15 Loading... Question 4 of 15 4. An alternating current is represented by the equation I = I_{o}sinωt, which of the following equation represents an alternating current of frequency and amplitude twice that of the above current?A. I = 2Iosin(2ωt)B. I = Iosin(2ωt)C. I = 2IsinωtD. I = 2Iosin(ωt/2)Question 4 of 15 Loading... Question 5 of 15 5. Ammeter connected in an AC circuit measures _______.A. Net value of currentB. Exact value of currentC. Peak value of currentD. rms value of currentQuestion 5 of 15 Loading... Question 6 of 15 6. What is the self inductance of a coil in which an induced emf of 2V is set up when the current changes at the rate of 4 As^{-1}?A. 2.0HB. 8.0HC. 0.5HD. 0.5mHQuestion 6 of 15 Loading... Question 7 of 15 7. Electromagnetic waves consists of _________.A. EnergyB. NoneC. HeatD. MassQuestion 7 of 15 Loading... Question 8 of 15 8. In an LCR series circuit, if V is the effective value of the applied voltage, V_{R} is the voltage across R, V_{L }is the effective voltage across L & V_{c} is the effective voltage across C thenA. V2 = VR2 + (VL - Vc)2B. V2 = VL2 + (VR - Vc)2C. V2 = VR2 + VL2 + Vc2D. V = VR+VL+VcQuestion 8 of 15 Loading... Question 9 of 15 9. The direction of propagation of an electromagnetic waves is _______.A. Parallel to electric and magnetic fieldB. Perpendicular to both electric and magnetic fieldC. Perpendicular to electric fieldD. Perpendicular to magnetic fieldQuestion 9 of 15 Loading... Question 10 of 15 10. Average value of current and voltage over a cycle of AC isA. BothB. ZeroC. NegativeD. PositiveQuestion 10 of 15 Loading... Question 11 of 15 11. A choke coil hasA. High inductance and high resistanceB. Low inductance and high resistanceC. Low inductance and low resistanceD. High inductance and low resistanceQuestion 11 of 15 Loading... Question 12 of 15 12. In capacitive circuit, the current _________.A. Is in phase with voltageB. Opposite in phase of voltage by πC. Leads forward the voltage by π/2D. Lags behind voltage by π/2Question 12 of 15 Loading... Question 13 of 15 13. An alternating current of r.m.s value of 2A and a steady direct current I flowing through identical resistors dissipate heat at the same rate. What is the current I?A. √2AB. 1AC. 2√2AD. 2AQuestion 13 of 15 Loading... Question 14 of 15 14. At resonance the value of the power factor in an L-C-R series circuit is ______A. Not definiteB. ZeroC. ½D. 1Question 14 of 15 Loading... Question 15 of 15 15. An inductor may store energy in _________A. Its electric fieldB. Its coilsC. Its magnetic fieldD. Both electric and magnetic fieldQuestion 15 of 15 Loading... Loading... Related Study Posts:MDCAT Test Physics Test Online PreparationASF Written Test Preparation Online McqsOnline ECAT Test Preparation McqsFPSC SST Test Preparation Mcqs OnlinePPSC Lecturer Test Preparation Online McqsTESCO Jobs Online NTS Test Preparation McqsLecturer Test KPPSC Preparation Mcqs OnlineFIA ASI Sub Inspectors Job 2024 OTS Test Preparation…SPSC SST Test Preparation Mcqs Online with SyllabusFPSC Test Preparation Mcqs Online Subject Wise