1
GATE EE 2011
MCQ (Single Correct Answer)
+1
-0.3
A three-phase current source inverter used for the speed control of an induction motor is to be realized using MOSFET switches as shown below. Switches $${S_1}$$ to $${S_6}$$ are identical switches. GATE EE 2011 Power Electronics - Inverters Question 26 English

The proper configuration for realizing switches $${S_1}$$ to $${S_6}$$ is

A
GATE EE 2011 Power Electronics - Inverters Question 26 English Option 1
B
GATE EE 2011 Power Electronics - Inverters Question 26 English Option 2
C
GATE EE 2011 Power Electronics - Inverters Question 26 English Option 3
D
GATE EE 2011 Power Electronics - Inverters Question 26 English Option 4
2
GATE EE 2008
MCQ (Single Correct Answer)
+1
-0.3
A $$3$$ - phase voltage source Inverter is operated in $${180^ \circ }$$ conduction mode. Which one of the following statements is true?
A
Both pole - voltage and line - voltage will have $${3^{rd}}$$ harmonic components
B
Pole - voltage will have $${3^{rd}}$$ harmonic component but line - voltage will be free from $${3^{rd}}$$ harmonic
C
Line - voltage will have $${3^{rd}}$$ harmonic component but pole - voltage will be free from $${3^{rd}}$$ harmonic
D
Both pole - voltage and line - voltage will be free from $${3^{rd}}$$ harmonic components
3
GATE EE 2007
MCQ (Single Correct Answer)
+1
-0.3
A three - phase fully - controlled thyristor bridge converter is used as line commuted inverter to feed $$50kW$$ power $$420$$ $$V$$ $$dc$$ to a three phase, $$415$$ $$V$$ (line), $$50$$ $$Hz$$ $$ac$$ mains, Consider $$dc$$ link current to be constant. The $$rms$$ current of the thyristor is
A
$$119.05$$ $$A$$
B
$$79.37$$ $$A$$
C
$$68.73$$ $$A$$
D
$$39.68$$ $$A$$
4
GATE EE 2007
MCQ (Single Correct Answer)
+1
-0.3
''Six $$MOSFETS$$ connected in a bridge configuration (having no other power device) MUST be operated as Voltage Source Inverter $$(VSI)''.$$ This statement is
A
True, because being majority carrier devices. $$MOSFETS$$ are voltage driven
B
True, because $$MOSFETs$$ have inherently anti - parallel diodes
C
False, because it can be operated both as Current Source Inverter $$(CSI)$$ or a $$VSI$$
D
False, because $$MOSFETs$$ can be operated as execellent constant current sources in the saturation region
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