6. Which of the following definitions are correct for root mean square voltage (

Question

6. Which of the following definitions are correct for root mean square voltage (r.m.s) of a sinusoid? 1) 2) 3) 4) That AC value which is equivalent to non-sinusoidal value That AC value which is equivalent to an average value That value which will produce the same heating effect as an equivalent DC voltage The value of a sinusoidal wave, which is a square, times the supply ELE2601/101/3/201 7. A sinusoidal e.m.f can be generated by: 1) Rotating a rectangular coil in a uniform magnetic field 2) A coil in a stationary magnetic fielod 3) Frequency supply 4) Field current 8. A heater is rated 220V, 15KW, A.C. The value 220V refers to 1) Average voltage 2) r.m.s voltage 3) peak voltage 4) Vmax A resistance of 100 is connected in series with a 200 resistor. What is the phase shift (angle) between voltage and current? 9, 1) 90* 2) 90 3) 0 4) 120 BC

Explanation / Answer

For the first one answer is option B

rms value is a constant value that is used ot find the average of an alternating quantity over it's time period

for the second one answer is optionB

the emf will be induced when a coil in a stationary magnetic field

for the third one answer is option B

There 220v shows the effective rms voltage

for the last one answer is option C

in any circuit to introduce any phase shift we need reactance.for the resistors it is zero ,so the answer is 0

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