When both the inductance and resistance of a coil are doubled the val – McqOptions

MCQOPTIONS

1.	When both the inductance and resistance of a coil are doubled the value of
A.	time constant remains unchanged
B.	initial rate of rise of current is doubled
C.	final steady current is doubled
D.	time constant is halved
Answer» B. initial rate of rise of current is doubled

Discussion

No Comment Found

Related MCQs

A single core cable used on 33000 V has conductor diameter 10 mm and the in ternal diameter of sheath 25 mm. The maximum electrostatic stress in the cable is
A capacitor in a circuit became hot and ultimately exploded due to wrong con nections, which type of capacitor it could be ?
A capacitance of 100 fiF is connected in series with a resistance of 8000 2. The time constant of the circuit is
A conductor carries 125 amperes of current under 60 to a magnetic field of 1.1 tesla. The force on the conductor will be nearly
Electric field of an infinitely long conductor of charge density , is given by E = /(2 h).aN. State True/False
Find the permittivity of the surface when a wave incident at an angle 60 is reflected by the surface at 45 in air
Given that R = 20 ohm, L = 40 mH, C = 40 F, G = 0.02 mho. Find whether the line is distortionless or not.
If V = 2x2y – 5z, find its electric field at point (-4,3,6)
Calculate the transmission coefficient, when the incident and transmittedamplitudes are 10 and 7 respectively.
The power of the electromagnetic wave with electric and magnetic field intensities givenby 12 and 15 respectively is