1
GATE EE 1997
MCQ (Single Correct Answer)
+1
-0.3
$$\mathop {Lim}\limits_{\theta \to 0} \,{{\sin \,m\,\theta } \over \theta },$$ where $$m$$ is an integer, is one of the following :
A
$$m$$
B
$$m\pi $$
C
$$m\theta $$
D
$$1$$
2
GATE EE 1997
MCQ (Single Correct Answer)
+1
-0.3
If a diode is connected in anti - parallel with a thyristor, then
A
Both turn off power loss and turn off time decreases
B
Turn-off power loss decreases but turn - off -time increases
C
Turn-off power loss increases, but turn off time decreases
D
None of the above
3
GATE EE 1997
MCQ (Single Correct Answer)
+1
-0.3
In a dual converter, the circulating current
A
Allows smooth reversal of load current, but increases the response time
B
Does not allow smooth reversal of load current, but reduces the response time
C
Allows smooth reversal of load current with improved speed of response
D
Flows only if there is no interconnecting inductor
4
GATE EE 1997
Subjective
+5
-0
An $$SCR$$ is connected in series with a $$300V$$ $$ac$$ supply and a $$300$$ ohms load resistor calculate

(a) The reading of a moving coil ammeter connected in series with the load and

(b) The reading of a moving iron voltmeter connected across the $$SCR$$ for firing angle of $${45^ \circ }$$

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