GATE EE

Basic of Indicating Instruments

Electrical and Electronics Measurement

(Past Years Questions)

Marks 1

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Match the following. ...
GATE EE 2015 Set 2
A ($$0-50$$ $$A$$) moving coil ammeter has a voltage drop of $$0.1$$ $$V$$ across its terminals at full scale deflection...
GATE EE 2015 Set 1
The saw-tooth voltage waveform shown in the figure is fed to a moving iron voltmeter. Its reading would be close to ____...
GATE EE 2014 Set 2
The input impedance of the permanent magnet moving coil $$(PMMC)$$ voltmeter is infinite. Assuming that the diode shown ...
GATE EE 2013
Three moving iron type voltmeters are connected as shown below. Voltmeter readings are $$V,$$ $${V_1}$$ and $${V_2}$$ , ...
GATE EE 2013
A periodic voltage waveform observed on an oscilloscope across a load is shown. A permanent magnet moving coil $$(PMMC)$...
GATE EE 2012
An ammeter has a current range of $$0$$-$$5A,$$ and its internal resistance is $$0.2\Omega $$. In order to change the ra...
GATE EE 2010
A $$PMMC$$ voltmeter is connected across a series combination of a $$DC$$ voltage source $${V_1} = 2V$$ and $$AC$$ volta...
GATE EE 2005
A galvanometer with a full scale current of $$10$$ $$mA$$ has a resistance of $$1000$$$$\Omega $$. The multiplying power...
GATE EE 2004
A Manganin swamping resistance is connected in series with a moving coil ammeter consisting of a milli-ammeter and a sui...
GATE EE 2003
The effect of stray magnetic fields on the actuating torque of a portable instrument is maximum when the operating field...
GATE EE 2003
A d.c. voltmeter has a sensitivity of $$1000$$$$\Omega /volt.$$ When it measures half full scale in $$100$$ $$V$$ range,...
GATE EE 1998
A moving coil galvanometer is made into a d.c. ammeter by connecting
GATE EE 1998
An advantage of a permanent magnet moving coil instrument is that it is
GATE EE 1996
The scale of a voltmeter is uniform. Its type is
GATE EE 1996
For a given frequency, the deflecting torque of an induction ammeter is directly proportional to
GATE EE 1996
Four ammeters $$M1, M2, M3$$ and $$M4$$ with the following specifications are available. A current of $$1$$ $$A$$ is ...
GATE EE 1995
Two $$100V$$ full scale $$PMMC$$ type D.C voltmeter having figure of merits ($$FOM)$$ of $$10k\Omega /V$$ and $$20k\Omeg...
GATE EE 1995
A $$0$$-$$10$$ $$mA$$ $$PMMC$$ ammeter reads $$4$$ $$mA$$ in a circuit. Its bottom control spring snaps suddenly. The me...
GATE EE 1994
An unshielded moving iron voltmeter is used to measure the voltage in an a.c. circuit. If a stray d.c. magnetic field ha...
GATE EE 1992
The current $$i(t)$$ passing through $$10\Omega $$ resistor as shown in fig $$A$$. as a waveform as shown in fig $$B.$$ ...
GATE EE 1991

Marks 2

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A dc voltage with ripple is given by $$v\left( t \right)\,\,\,\, = \,\,\,\,\left[ {100 + 10\sin \left( {\omega t} \right...
GATE EE 2016 Set 1
A periodic waveform observed across a load is represented by $$$V\left( t \right) = \left\{ {\matrix{ {1 + \sin \,\o...
GATE EE 2014 Set 3
Two ammeters $$X$$ and $$Y$$ have resistances of $$1.2$$ $$\Omega $$ and $$1.5$$ $$\Omega $$ respectively and they give ...
GATE EE 2014 Set 2
The reading of voltmeter $$(rms)$$ in volts, for the circuit shown in the figure is ______. ...
GATE EE 2014 Set 1
The dc current flowing in a circuit is measured by two ammeters, one PMMC and another electrodynamometer type, connected...
GATE EE 2014 Set 1
An analog voltmeter uses external multiplier settings. With a multiplier setting of $$20\,\,k\Omega ,$$ it reads $$440$$...
GATE EE 2012
An average-reading digital multimeter reads $$10V$$ when fed with a triangular wave, symmetric about the time axis. For ...
GATE EE 2009
A current of $$ - 8 + 6\sqrt 2 \left( {\sin \,\omega t + {{30}^0}} \right)\,\,A$$ is passed though three meters. They ar...
GATE EE 2006
A $$1000$$ $$V$$ $$DC$$ supply has two $$1-core$$ cables as its positive and negative leads: their insulation resistance...
GATE EE 2005
A DC ammeter has a resistance of $$0.1$$$$\Omega $$ and its current range is $$0$$ – $$100A.$$ If the range is to be ext...
GATE EE 2005
A moving coil of a meter has $$100$$ turns, and a length and depth of $$10$$ $$mm$$ and $$20$$ $$mm$$ respectively. It i...
GATE EE 2004
A moving iron ammeter produces a full scale torque of $$240$$ $$\,\mu Nm$$ with a deflection of $${120^ \circ }$$ at a c...
GATE EE 2004
The inductance of a certain moving-iron ammeter is expressed as $$L = 10 + 3\theta - {{{\theta ^2}} \over 4}\mu H,\,\,$...
GATE EE 2003
An ac voltmeter uses the circuit shown below, where the $$PMMC$$ meter has an internal resistance of $$100$$$$\Omega $$ ...
GATE EE 2003
A $$100$$ $$\mu A$$ ammeter has an internal resistance of $$100\,\Omega $$. For extending its range to measure $$500$$ $...
GATE EE 2001
A current of $$\left[ {2 + \sqrt 2 \sin \left( {314t + 30} \right) + 2\sqrt 2 \cos \left( {952t + 45} \right)} \right]$$...
GATE EE 1999

Marks 5

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For the given circuit the internal resistance of the ammeters as well as that of the current coil of the wattmeter are z...
GATE EE 1999

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