Question 1

High resistances are provided with a guard terminal. This guard terminal is used to :

Accepted Answer

A) bypass leakage current 
B) guard the resistance against stray electrostatic fields 
C) guard the resistance against over loads. 
D) none of the above. 
A) bypass leakage current 
B) guard the resistance against stray electrostatic fields 
C) guard the resistance against over loads. 
D) none of the above.

Question 2

--------- is an instrument which measures the insulation resistance of an electric circuit relative to earth and one another,

Accepted Answer

A) tangent galvanometer 
B) meggar 
C) current transformer 
D) none of the above 
A) tangent galvanometer 
B) meggar 
C) current transformer 
D) none of the above

Question 3

A bridge circuit works at a frequency of 2KHz, the following can be used as detectors for detection of null conditions in the bridge:

Accepted Answer

A) vibration galvanometers and headphones 
B) headphones and tunable amplifiers. 
C) vibration galvanometers and tunable amplifiers. 
D) vibration galvanometers, headphones and tunable amplifiers. 
A) vibration galvanometers and headphones 
B) headphones and tunable amplifiers. 
C) vibration galvanometers and tunable amplifiers. 
D) vibration galvanometers, headphones and tunable amplifiers.

Question 4

The wheatstone bridge cant be used for precision measurements because errors are introduce into on account of :

Accepted Answer

A) resistance of connecting leads 
B) thermo electric emf 
C) contact resistances 
D) all of the above. 
A) resistance of connecting leads 
B) thermo electric emf 
C) contact resistances 
D) all of the above.

Question 5

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

Accepted Answer

A) magnetic screening 
B) wagner earthing device 
C) wave filters 
D) any of the above 
A) magnetic screening 
B) wagner earthing device 
C) wave filters 
D) any of the above

High resistances are provided with a guard terminal. This guard terminal is used to :

--------- is an instrument which measures the insulation resistance of an electric circuit relative to earth and one another,

A bridge circuit works at a frequency of 2KHz, the following can be used as detectors for detection of null conditions in the bridge:

The wheatstone bridge cant be used for precision measurements because errors are introduce into on account of :

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

Electrical Instrumentation

Instrumentation and Electrical Engineering

Watt/Meters and Energy Meters

Energy Meter Adjustments and Measurement Techniques

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Exam 3: Electrical Measurement and Testing

High resistances are provided with a guard terminal. This guard terminal is used to :

--------- is an instrument which measures the insulation resistance of an electric circuit relative to earth and one another,

A bridge circuit works at a frequency of 2KHz, the following can be used as detectors for detection of null conditions in the bridge:

The wheatstone bridge cant be used for precision measurements because errors are introduce into on account of :

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

Electrical Instrumentation

Instrumentation and Electrical Engineering

Watt/Meters and Energy Meters

Energy Meter Adjustments and Measurement Techniques

Filters