__The current coil of a wattmeter is connected to the CT of R-phase. T – McqOptions

MCQOPTIONS

1.	__The current coil of a wattmeter is connected to the CT of R-phase. The potential coil is connected across Y and B phases. The wattmeter measures__
A.	Active power in R phase
B.	Active power of Y phase
C.	Reactive power of R phase
D.	Power proportional to 3 phase power if the load is balanced
Answer» D. Power proportional to 3 phase power if the load is balanced

Discussion

No Comment Found

Related MCQs

_____ instruments are those which measure the total quantity of electricity delivered in a particular time.
The use of _____ instruments is merely confined within laboratories as stand ardizing instruments.
Which of the following instruments indicate the instantaneous value of the electrical quantity being measured at the time at which it is being measured ?
A _____ device prevents the oscillation of the moving system and enables the latter to reach its final position quickly
A moving-coil permanent-magnet instrument can be used as _____ by using a low resistance shunt.
Most common form of A.C. meters met with in every day domestic and industrial installations are
is an instrument which measures the insulation resistance of an electric circuit relative to earth and one another,
The ratio of maximum displacement deviation to full scale deviation of the instrument is called
In a vibrating reed frequency meter the natural frequencies of two adjacent reeds have a difference of
In an AC. co-ordinate potentiometer, the currents in the phase and quadrature potentiometer are adjusted to be