1
GATE EE 2013
+1
-0.3
Three moving iron type voltmeters are connected as shown below. Voltmeter readings are $$V,$$ $${V_1}$$ and $${V_2}$$ , as indicated. The correct relation among the voltmeter readings is
A
$$V = {{{V_1}} \over {\sqrt 2 }} + {{{V_2}} \over {\sqrt 2 }}$$
B
$$V = {V_1} + {V_2}$$
C
$$V = {V_1}{V_2}$$
D
$$V = {V_2} - {V_1}$$
2
GATE EE 2012
+1
-0.3
A periodic voltage waveform observed on an oscilloscope across a load is shown. A permanent magnet moving coil $$(PMMC)$$ meter connected across the same load reads
A
$$4$$ $$V$$
B
$$5$$ $$V$$
C
$$8$$ $$V$$
D
$$10$$ $$V$$
3
GATE EE 2010
+1
-0.3
An ammeter has a current range of $$0$$-$$5A,$$ and its internal resistance is $$0.2\Omega$$. In order to change the range to $$0$$-$$25$$ $$A$$ we need to add a resistance of
A
$$0.8\,\Omega$$ in series with the meter
B
$$1.0\,\Omega$$ in series with the meter.
C
$$0.04\,\Omega$$ in parallel with the meter
D
$$0.05\,\Omega$$ in parallel with the meter
4
GATE EE 2005
+1
-0.3
A $$PMMC$$ voltmeter is connected across a series combination of a $$DC$$ voltage source $${V_1} = 2V$$ and $$AC$$ voltage source $${V_2}\left( t \right) = 3$$ $$sin(4t)$$ $$V.$$ The meter reads
A
$$2V$$
B
$$5V$$
C
$$\left( {2 + \sqrt 3 /2} \right)V$$
D
$$\sqrt {17} /2V$$
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