1
GATE EE 2006
+2
-0.6
A current of $$- 8 + 6\sqrt 2 \left( {\sin \,\omega t + {{30}^0}} \right)\,\,A$$ is passed though three meters. They are a center zero $$PMMC$$ meter, true $$r.m.s$$ meter and moving $${\rm I}$$ron instrument. The respective reading (in $$A$$) will be
A
$$8, 6, 10$$
B
$$8, 6, 8$$
C
$$-8, 10, 10$$
D
$$-8, 2, 2$$
2
GATE EE 2005
+2
-0.6
A $$1000$$ $$V$$ $$DC$$ supply has two $$1-core$$ cables as its positive and negative leads: their insulation resistances to earth are $$4\,\,M\Omega$$ and $$6\,\,M\Omega$$, respectively, as shown in figure. A voltmeter with resistance $$50\,\,k\Omega$$ is used to measure the insulation of the cable. When connected between the positive core and earth, the voltmeter reads
A
$$8$$ $$V$$
B
$$16$$ $$V$$
C
$$24$$ $$V$$
D
$$40$$ $$V$$
3
GATE EE 2005
+2
-0.6
A DC ammeter has a resistance of $$0.1$$$$\Omega$$ and its current range is $$0$$ – $$100A.$$ If the range is to be extended to $$0$$ –$$500A,$$ the meter requires the following shunt resistance
A
$$0.010$$ $$\Omega$$
B
$$0.011$$ $$\Omega$$
C
$$0.025$$ $$\Omega$$
D
$$1.0$$ $$\Omega$$
4
GATE EE 2004
+2
-0.6
A moving iron ammeter produces a full scale torque of $$240$$ $$\,\mu Nm$$ with a deflection of $${120^ \circ }$$ at a current of $$10$$ $$A$$. The rate of change of self inductance $$\left( {\mu H/radian} \right)$$ of the instrument at full scale is
A
$$2.0\,\mu H/$$radian
B
$$4.8\,\mu H/$$radian
C
$$12.0\,\mu H/$$radian
D
$$114.6\,\mu H/$$radian
EXAM MAP
Medical
NEET