1
GATE EE 2013
MCQ (Single Correct Answer)
+1
-0.3
Square roots of $$-i,$$ where $$i = \sqrt { - 1} $$ are
A
$$i, -i$$
B
$$\eqalign{ & \cos \left( { - {\pi \over 4}} \right) + \sin \left( { - {\pi \over 4}} \right), \cr & \cos \left( {{{3\pi } \over 4}} \right) + i\,\sin \left( {{{3\pi } \over 4}} \right) \cr} $$
C
$$\eqalign{ & \cos \left( {{\pi \over 4}} \right) + i\sin \left( {{{3\pi } \over 4}} \right), \cr & \cos \left( {{{3\pi } \over 4}} \right) + i\sin \left( {{\pi \over 4}} \right) \cr} $$
D
$$\eqalign{ & \cos \left( {{{3\pi } \over 4}} \right) + i\sin \left( { - {{3\pi } \over 4}} \right), \cr & \cos \left( { - {{3\pi } \over 4}} \right) + i\sin \left( {{{3\pi } \over 4}} \right) \cr} $$
2
GATE EE 2013
MCQ (Single Correct Answer)
+2
-0.6
$$\oint {{{{z^2} - 4} \over {{z^2} + 4}}} dz\,\,$$ evaluated anticlockwise around the circular $$\left| {z - i} \right| = 2,$$ where $$i = \sqrt { - 1} $$, is
A
$$ - 4\pi $$
B
$$0$$
C
$$2 + \pi $$
D
$$2+2$$
3
GATE EE 2013
MCQ (Single Correct Answer)
+2
-0.6
Thyristor $$T$$ in the figure below is initially off and is triggered with a single pulse of width $$10\mu s.$$ It is given that $$L = \left( {{{100} \over \pi }} \right)\mu H$$ and $$C = \left( {{{100} \over \pi }} \right)\mu F.$$ Assuming latching and holding currents of the thyristor are both zero and the initial charge on $$C$$ is zero, $$T$$ conducts for GATE EE 2013 Power Electronics - Power Semiconductor Devices Question 8 English
A
$$10\mu s$$
B
$$50$$ $$s$$
C
$$100\mu s$$
D
$$200\mu s$$
4
GATE EE 2013
MCQ (Single Correct Answer)
+2
-0.6
In the figure shown below, the chopper feeds a resistive load from a battery source. $$MOSFET$$ $$Q$$ is switched at $$250$$ $$kHz,$$ with a duty ratio of $$0.4.$$ All elements of the circuit are assumed to be ideal. GATE EE 2013 Power Electronics - Choppers and Commutation Techniques Question 21 English

The average source current in Amps in steady-state is

A
$$3/2$$
B
$$5/3$$
C
$$5/2$$
D
$$15/4$$
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12