1
GATE EE 2009
+2
-0.6
In the chopper circuit shown, the main thyristor $$\left( {{T_M}} \right)$$ is operated at a duty ratio of $$0.8$$ which is much larger than the commutation interval. If the maximum allowable reapplied $${{dV} \over {dt}}$$ on $${T_M}$$ is $$50$$ $$V/\mu s,$$
what should be the theoretical minimum value of $${C_1}?$$. Assume current ripple through $${L_0}$$ to be negligible.
A
$$0.2\,\,\mu \,F$$
B
$$0.02\,\,\mu \,F$$
C
$$2\,\,\mu \,F$$
D
$$20\,\,\mu \,F$$
2
GATE EE 2009
+2
-0.6
The Current Source Inverter shown in Figure is operated by alternately turning on thyristor pairs $$\left( {{T_1},\,\,{T_2}} \right)$$ and $$\left( {{T_3},\,\,{T_4}} \right).$$ If the load is purely resistive, the theoretical maximum output frequency obtainable will be
A
$$125$$ $$kHz$$
B
$$250$$ $$kHz$$
C
$$500$$ $$kHz$$
D
$$50$$ $$kHz$$
3
GATE EE 2009
+2
-0.6
The circuit shows an ideal diode connected to a pure inductor and is connected to a purely sinusoidal $$50$$ $$Hz$$ voltage source. Under ideal condition the current waveform through the indicator will look like
A
B
C
D
4
GATE EE 2009
+1
-0.3
For a fixed value of complex power flow in a transmission line having a sending end voltage $$V$$, the real power loss will be proportional to
A
$$V$$
B
$${V^2}$$
C
$${1 \over {{V^2}}}$$
D
$${1 \over V}$$
GATE EE Papers
2023
2022
2021
2020
2019
2018
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
1996
1995
1994
1993
1992
1991
EXAM MAP
Medical
NEET