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1
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

If impedance is $$\sqrt3$$ times of resistance, then find phase difference.

A
Zero
B
30$$^\circ$$
C
60$$^\circ$$
D
Data is incomplete
2
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

For a series L-C-R circuit at resonance, which statement is not true?

A
Wattless current is zero.
B
Power factor is zero.
C
Peak energy stored by a capacitor = peak energy stored by an inductor.
D
Average power = apparent power.
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COMEDK Subjects
Physics
Mechanics
Units & MeasurementsVector AlgebraMotionLaws of MotionCircular MotionWork, Energy and PowerCenter of Mass and CollisionRotational MotionElasticityFluid MechanicsHeat and ThermodynamicsGravitationSimple Harmonic MotionWaves
Optics
Ray OpticsWave Optics
Electromagnetism
ElectrostaticsCurrent ElectricityCapacitorMoving Charges and MagnetismMagnetism and MatterElectromagnetic InductionAlternating CurrentElectromagnetic Waves
Modern Physics
Atoms and NucleiDual Nature of RadiationSemiconductor Devices and Logic GatesCommunication Systems
Chemistry
Physical Chemistry
Some Basic Concepts of ChemistryAtomic StructureStates of MatterThermodynamicsChemical EquilibriumIonic EquilibriumLiquid SolutionRedox ReactionsSurface ChemistrySolid StateElectrochemistryChemical KineticsNuclear Chemistry
Inorganic Chemistry
Periodic Table and PeriodicityChemical Bonding and Molecular StructureHydrogen and It's Compoundss-Block Elementsp-Block Elementsd and f Block ElementsMetallurgyCoordination CompoundsEnvironmental Chemistry
Organic Chemistry
IUPAC NomenclaturesGeneral Organic ChemistryIsomerismHydrocarbonsHaloalkanes and HaloarenesAlcohol, Phenols and EthersAldehyde and KetoneCarboxylic Acids and Its DerivativesCompounds Containing NitrogenPolymersBiomoleculesChemistry in Everyday LifePractical Organic Chemistry
Mathematics
Algebra
Sets and RelationsLogarithmsComplex NumbersQuadratic EquationsSequences and SeriesPermutations and CombinationsProbabilityBinomial TheoremVector AlgebraThree Dimensional GeometryMatrices and DeterminantsStatisticsMathematical ReasoningLinear Programming
Trigonometry
Trigonometric Ratios & IdentitiesTrigonometric EquationsInverse Trigonometric FunctionsProperties of Triangles
Coordinate Geometry
Straight Lines and Pair of Straight LinesCircleParabolaEllipseHyperbola
Calculus
FunctionsLimits, Continuity and DifferentiabilityDifferentiationApplication of DerivativesIndefinite IntegrationDefinite IntegrationArea Under The CurvesDifferential Equations