Measurements and Instrumentation Part 9
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Attempt Free Measurements and Instrumentation Part 9 Here. Read The Important Electrical MCQ From Below.
(a) AC signals
(b) DC signals
(c) Both AC and DC signals
(d) Time invariant signals
Answer
[2] The internal resistance of an ammeter should be
(a) Very small
(b) medium
(c) High
(d) Infinity
Answer
Measurements and Instrumentation Part 9
[3] A galvanometer has
(a) air friction damping
(b) fluid friction damping
(c) Spring coil damping
(d) Eddy current damping
Answer
[4] Electrostatic instruments are normally used for
(a) Low current measurements
(b) High current measurements
(c) Low voltage measurements
(d) High voltage measurements
Answer
[5] In a moving coil instrument, the deflecting torque is proportional to
(a) Current
(b) Square of the current
(c) Squareroot of the current
(d) sine of the measurand
Answer
Measurements and Instrumentation Part 9
[6] The absolute measurement of resistance is done by
(a) Ohm’s law method
(b) Bridge Method
(c) Rayleigh method
(d) Lorenz method
Answer
[7] To measure the flux, devices used are based on
(a) Voltaic effect
(b) Piezo-electric effect
(c) Hall effect
(d) Photo-voltaic effect
Answer
[8] The form factor in AC is the ratio of
(a) peak value to average value
(b) peak value to rms value
(c) rms value to average value
(d) rms value to peak value
Answer
Measurements and Instrumentation Part 9
[9] PMMC type instruments normally use
(a) Air friction damping
(b) Fluid friction damping
(c) Eddy current damping
(d) None of the above
Answer
[10] In a moving iron meter, the deflecting torque is proportional to
(a) Current through the coil
(b) Square of the current through the coil
(c) Sine of the measurand
(d) Squareroot of the measurand
Answer
[11] In a gravity controlled instrument, the deflection angle is proportional
(a) Measurand
(b) Square of the measurand
(c) sine inverse of measurand
(d) sine of the measurand
Answer
Measurements and Instrumentation Part 9
[12] Ampere is one of the
(a) Supplementary units
(b) Derived units
(c) Base units
(d) Units used to measure charge
Answer
[13] Direct method is used to measure
(a) Length
(b) Temperature
(c) Pressure
(d) Voltage
Answer
Measurements and Instrumentation Part 9
