The voltage control in electric supply networks in required on account of which
The voltage control in electric supply networks in required on account of which of the following reasons ?
A Weston synchronoscope is a
A Weston synchronoscope is a
The function of shunt in an ammeter is to
The function of shunt in an ammeter is to
The density of hydrogen is _____ times the density of air.
The density of hydrogen is _____ times the density of air.
A phase shifting transformer is used in conjunction with
A phase shifting transformer is used in conjunction with
In D.C. machines the width of the duct is usually
In D.C. machines the width of the duct is usually
The weight of copper of both armature and field windings decreases with _____ in
The weight of copper of both armature and field windings decreases with _____ in number of poles.
The efficiency of a machine should be as ______ as possible to reduce the operat
The efficiency of a machine should be as ______ as possible to reduce the operating cost.
Which of the following instruments indicate the instantaneous value of the elect
Which of the following instruments indicate the instantaneous value of the electrical quantity being measured at the time at which it is being measured…
Which of the following methods is used for air cooling of turbo-alternators ?
Which of the following methods is used for air cooling of turbo-alternators ?
In Weston synchronoscope the moving coil is connected across
In Weston synchronoscope the moving coil is connected across
In a Weston frequency meter, the magnetic axes of the two fixed coils are
In a Weston frequency meter, the magnetic axes of the two fixed coils are