An alternating current is given by the equation i = i1 cos ωt + i2 sin ωt. The rms current is given is given by
The diagram shows a capacitor C and a resistor R connected in series to an AC source V1
are voltmeters and A is an ammeter.
Consider now following conditions:
I. Reading in A and V2 are always in phase
II. Reading in V1 ahead in phase with reading in V2.
III. Reading in A and V1 are always in phase
Which of these statements are/is correct?
Electric Energy and Magnetic Energy are related to which of the following element respectively.
In a transistor, which of following statement holds true?
For a medium length transmission line, A is
A DC shunt motor runs at 500rpm at 220V, a resistance of 4.5ohm is added in series with armature for speed control, Ra is 0.5ohm, what is the armature current during stalling?
When a 2300/230 V, 50 KVA, 50 Hz transformer is connected as an auto-transformer to supply a 2300 V circuit from a 2530 V source. The KVA rating of auto transformer will be:
The transfer function of a system is given as
settling time is 4 sec (Assuming 2% tolerance band)
The frequency of damped oscillation is:
An aquadag coating is used is a CRO to collect:
When two signals are applied on two axis of CRO. The Lissajous pattern visible is shown below. If the frequency of signal on y-axis is 1 KHz. frequency of signal on x-axis is :