Quiz sheet for measurement instruments
Compared to the inductance of a straight conductor, the inductance of an air cored coil will be:
The force acting on a current carrying conductor in a magnetic field is proportional to:
A) flux density, current and conductor length
B) voltage, speed and flux
C) flux density, torque and speed
D) flux density, voltage and conductor length
Turning effort is referred to as:
B) Newton metres
Velocity is measured in:
A resistor connected in series with a voltmeter is called a
D) range extender
A resistor placed in parallel with an Ammeter is called a
A voltmeter has a ______ resistance and is connected in ______ with the load.
A) high, parallel
B) high, series
C) low, series
D) low, parallel
An ammeter has a ______ resistance and is connected in ______ with the load.
A) low, series
B) high, parallel
C) high, series
D) low, parallel
Before connecting an ohmmeter to measure resistance
A) the supply must be disconnected
B) it must be set on the highest range
C) it must be zeroed
D) the meter must be turned off and on again.
Before connecting any meter to a circuit it should be set on
A) the highest range
B) the lowest range
C) a firm surface
D) to the off position
The deflecting torque in an analogue meter is produced by.
A) the coil current
C) Lenz's law
D) an air dashpot
The meter that requires series and parallel connections is a
The moving coil meter is _______ and measures _______:
A) non polarised, D.C. or A.C.
B) non polarised, D.C. only.
C) polarised, A.C. only
D) polarised, D.C. only
The moving iron meter is _______ and measures _______:
A) polarised, D.C. only.
B) non polarised, D.C. or A.C.
C) non polarised, D.C. only.
D) polarised, A.C. only.