Alternating Current Test

Result

Alternating Current Test - 14

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Weekly Quiz Competition

Question 1
1 / -0

Power factor of L- R circuit is

A
R/ωL

B
R/√(ωL)²+R²

C
ωLR

D
√ωLR

Solution

The power factor is defined as the ratio of resistance to the impedance of an AC Circuit.
Question 2
1 / -0

If L be the inductance, R resistance and C be the capacitance of a capacitor, then dimensional formulae of L/R and RC are

A
M⁰LT⁻¹,ML⁰T⁻¹

B
M⁰L⁰T, M⁰L⁰T

C
M⁰L⁰T, I

D
M⁰L⁰T, M⁰L⁰T⁻²

Solution

If L be the inductance, R resistance and C be the capacitance of a capacitor, then dimensional formulae of L/R and RC M⁰L⁰T, M⁰L⁰T.
Question 3
1 / -0

In a full-wave rectification if the input frequency is 50 Hz then output frequency is

A
50 Hz

B
25 Hz

C
100 Hz

D
200 Hz

Solution

If we consider this, the output frequency is certainly twice than that of input frequency.

So, if the input frequency is 50 Hz, output frequency will be 100 Hz.