1
GATE EE 2004
MCQ (Single Correct Answer)
+2
-0.6
A $$50$$ $$Hz,$$ bar primary $$CT$$ has a secondary with $$500$$ turns. The secondary supplies $$5A$$ current into a purely resistive burden of $$1\,\Omega $$. The magnetizing ampere-turns is $$200$$. The phase angle between the primary and secondary current is
A
$${4.6^0}$$
B
$${85.4^0}$$
C
$${94.6^0}$$
D
$${175.4^0}$$
2
GATE EE 2004
MCQ (Single Correct Answer)
+2
-0.6
The core flux in the $$CT$$ of above problem under the given operating condition is
A
$$0$$
B
$$45.0\,\mu \,$$Wb
C
$$22.5$$ mWb
D
$$100.0$$ mWb.
3
GATE EE 2003
MCQ (Single Correct Answer)
+2
-0.6
A $$500$$ $$A/5$$ $$A,$$ $$50$$ $$Hz$$ current transformer has a bar primary. The secondary burden is a pure resistance of $$1\,\Omega $$ and it draws a current of $$5A$$. If the magnetic core requires $$250$$ AT for magnetization, the percentage ratio error is
A
$$10.56$$
B
$$-10.56$$
C
$$11.80$$
D
$$-11.80$$
4
GATE EE 1994
MCQ (Single Correct Answer)
+2
-0.6
A d.c. potentiometer is designed to measure up to about $$2$$ $$V$$ with a slide wire of $$800$$ mm. A standard cell of emf $$1.18V$$ obtains balance at $$600$$ mm. A test cell is seen to obtain balance at $$680$$ mm. The emf of the test cell is
A
$$1.00V$$
B
$$1.34V$$
C
$$1.50V$$
D
$$1.70V$$
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