Instrumentation - Power Generation quiz part 7 | Instrumentation and Control Engineering

Welcome to your Quiz .This quiz is about power generation.it contains 15 questions

1.

A Weston frequency meter is

moving coil instrument

moving iron instrument

dynamometer instrument

none of the above

2.

In a Weston synchronoscope, the fixed coils are connected across

bus-bars

incoming alternator

a lamp

none of the above

3.

In a Weston frequency meter, the magnetic axes of the two fixed coils are

parallel

perpendicular

inclined at 60°

inclined at 120°

4.

A power factor meter has

one current circuit and two pressure circuits

one current circuit and one pressure circuit

two current circuits and one pressure circuit

none of the above

5.

In a vibrating reed frequency meter the natural frequencies of two adjacent reeds have a difference of

0.1 Hz

0.25 Hz

0.5 Hz

1.5 Hz

6.

To avoid the effect of stray magnetic field in A.C. bridges we can use

magnetic screening

Wagner earthing device

wave filters

any of the above

7.

In a single phase power factor meter the phase difference between the currents in the two pressure coils is

exactly 0°

approximately 0°

exactly 90°

none of the above

8.

If an inductance is connected in one arm of bridge and resistances in the remaining three arms

the bridge can always be balanced

the bridge cannot be balanced

the bridge can be balanced if the resistances have some specific values

9.

A Weston synchronoscope is a

moving coil instrument

moving iron instrument

dynamometer instrument

none of the above

10.

The two pressure coils of a single phase power factor meter have

the same dimensions and the same number of turns

the same dimension but different number of turns

the same number of turns but different dimensions

none of the above

11.

In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at

0°

60°

90°

120°

Instrumentation – Power Generation quiz part 7

Welcome to your Quiz .This quiz is about power generation.it contains 15 questions

A Weston frequency meter is

In a Weston synchronoscope, the fixed coils are connected across

In a Weston frequency meter, the magnetic axes of the two fixed coils are

A power factor meter has

In a vibrating reed frequency meter the natural frequencies of two adjacent reeds have a difference of

To avoid the effect of stray magnetic field in A.C. bridges we can use

In a single phase power factor meter the phase difference between the currents in the two pressure coils is

If an inductance is connected in one arm of bridge and resistances in the remaining three arms

A Weston synchronoscope is a

The two pressure coils of a single phase power factor meter have

In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at

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