1
GATE EE 2005
MCQ (Single Correct Answer)
+1
-0.3
If $$P$$ and $$Q$$ are two random events, then which of the following is true?
A
Independence of $$P$$ and $$Q$$ implies that probability $$\,\,\left( {P \cap Q} \right) = 0\,\,$$
B
Probability $$\,\,\left( {P \cap Q} \right) \ge \,\,$$ probability $$(P)$$ $$+$$ probability $$(Q)$$
C
If $$P$$ and $$Q$$ are mutually exclusive then they must be independent
D
Probability $$\,\,\left( {P \cap Q} \right) \le \,\,$$ probability $$(P)$$
2
GATE EE 2005
MCQ (Single Correct Answer)
+1
-0.3
The output voltage waveform of a three - phase square-wave inverter contains
A
only even harmonics
B
both odd and even harmonics
C
only odd harmonics
D
only triple harmonics
3
GATE EE 2005
MCQ (Single Correct Answer)
+2
-0.6
The given figure shows a step $$-$$ down chopper switched at $$1$$ $$KHz$$ with a duty ratio $$D = 0.5.$$ The peak - peak ripple in the load current is close to GATE EE 2005 Power Electronics - Choppers and Commutation Techniques Question 35 English
A
$$10$$ $$A$$
B
$$0.5$$ $$A$$
C
$$0.125$$ $$A$$
D
$$0.25$$ $$A$$
4
GATE EE 2005
MCQ (Single Correct Answer)
+2
-0.6
An electronic switch $$S$$ is required to block voltages of either polarity during its OFF state as shown in figure (a). This switch is required to conduct in only one direction during its ON state as shown in the figure (b). GATE EE 2005 Power Electronics - Power Semiconductor Devices Question 13 English 1

Which of the following are valid realizations of the switch $$s$$?

GATE EE 2005 Power Electronics - Power Semiconductor Devices Question 13 English 2
A
Only $$1$$
B
$$1$$ and $$2$$
C
$$1$$ and $$3$$
D
$$3$$ and $$4$$