1
GATE EE 2003
+2
-0.6
An inverter has a periodic output voltage with the output waveform as shown in figure When the conduction angle $$\alpha = {120^0},$$ the $$rms$$ fundamental component of the output voltage is

A
$$0.78$$ $$V$$
B
$$1.10$$ $$V$$
C
$$0.90$$ $$V$$
D
$$1.27$$ $$V$$
2
GATE EE 2003
+2
-0.6
An inverter has a periodic output voltage with the output waveform as shown in figure With reference to the output waveform given in figure, the output of the converter will be free form $${5^{th}}$$ harmonic when

A
$$\alpha = {72^ \circ }$$
B
$$\alpha = {36^ \circ }$$
C
$$\alpha = {150^ \circ }$$
D
$$\alpha = {120^ \circ }$$
3
GATE EE 2002
+2
-0.6
Fig. $$(a)$$ shows an inverter circuit with a $$dc$$ source voltage $${V_{s}}$$. The semiconductor switches of the inverter are operated in such a manner that the pole voltages $${V_{10}}$$ and $${V_{20}}$$ are as shown in fig.
Fig. $$(b).$$ What is the rms value of the pole-to-pole voltage $${V_{12}}$$:  A
$${{{V_s}\phi } \over {\pi \sqrt 2 }}$$
B
$${V_s}\sqrt {{\phi \over \pi }}$$
C
$${V_s}\sqrt {{\phi \over {2\pi }}}$$
D
$${{{V_s}} \over \pi }$$
4
GATE EE 2001
+2
-0.6
A single - phase full-bridge voltage source inverter feeds a purely inductive load, as shown in figure. when $${T_1},{T_2},\,\,\,\,\,{T_3},{T_4}$$ are power transistors and $${D_1},{D_2},\,{D_3},{D_4}$$ are feedback diodes. The inverter is operated in square-wave mode with a frequency of $$50$$ $$Hz.$$ If the average load current is zero, what is the time duration of conduction of each feedback diode in a cycle? A
$$5\,\,m\,\,\sec$$
B
$$10\,\,m\,\,\sec$$
C
$$20\,\,m\,\,\sec$$
D
$$2.5\,\,m\,\,\sec$$
GATE EE Subjects
Electromagnetic Fields
Signals and Systems
Engineering Mathematics
General Aptitude
Power Electronics
Power System Analysis
Analog Electronics
Control Systems
Digital Electronics
Electrical Machines
Electric Circuits
Electrical and Electronics Measurement
EXAM MAP
Joint Entrance Examination