1
GATE EE 2007
MCQ (Single Correct Answer)
+1
-0.3
The dc motor, which can provide zero speed regulation at full load without any controller is
A
series
B
shunt
C
cumulative compound
D
differential compound
2
GATE EE 2007
MCQ (Single Correct Answer)
+1
-0.3
In a transformer, zero voltage regulation at full load is
A
not possible
B
possible at unity power factor load
C
possible at leading power factor load
D
possible at lagging power factor load
3
GATE EE 2007
MCQ (Single Correct Answer)
+2
-0.6
A single-phase $$50$$ $$kVA,$$ $$250$$ $$V/500V$$ two winding transformer has an efficiency of $$95\% $$ at full load, unity power factor. If it is reconfigured as a $$500V/750V$$ auto-transformer, its efficiency at its new rated load at unity power factor will be
A
$$95.752\% $$
B
$$97.851\% $$
C
$$98.276\% $$
D
$$99.241\% $$
4
GATE EE 2007
MCQ (Single Correct Answer)
+1
-0.3
Divergence of the vector field $$$\overrightarrow V\left(x,y,z\right)=-\left(x\cos xy\;+\;y\right)\;\widehat i\;+\;\left(y\cos xy\right)\;\widehat j\;+\;\left(\sin\;z^2\;+\;x^2\;+\;y^2\right)\widehat k$$$ is
A
$$2z\cos z^2$$
B
$$\sin xy\;+\;2z\;\cos z^2$$
C
$$x\sin xy\;-\;cosz$$
D
none of these
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12