BEEE_L1

What type of power is called useful power?

• Reactive

• Active

• Apparent

Unit of reactive power is

• VAr

• Watts

• VA

Power Factor lies between

• 100-200

• 0-1

• 10-20

• 1-2

Average value of pure triangular wave is

• 1/pi

• pi

• 0

• 4*pi

Rms value of sinusoidal wave is _______(Vm is peak value)

• Vm/2

• Vm/sqrt(2)

• Vm

• Vm*sqrt(2)

Under steady state, inductor behaves as ____________ for DC

• Open

• Short

Under steady state, capacitor behaves as __________for DC

• Open

• Short

Normally, how many time constant is assumed to attain steady state

• 4

• 3

• 2

• 5

In an RC circuits, time constant is _________

• RL

• R/C

• RC

In an RL circuit, time constant is __________

• R/L

• R/C

• L/R

• LR