Electronics and Communication Engineering - Power Electronics
Exercise : Power Electronics - Section 2
41.
UJT can be used for
Answer: Option
Explanation:
UJT relaxation oscillator is used to provide gate pulses to SCR for triggering.
42.
In a series inverter supplying a load resistance R, the commutating elements L and C should be such that
Answer: Option
Explanation:
Load should be under damped.
43.
In a full wave converter (M - 2 connection) feeding an RLE load, the peak thyristor current is 15 A. For fully controlled bridge circuit and same load current, the peak thyristor current will be
Answer: Option
Explanation:
In both the connections the output voltage and peak thyristor current are the same. Both are full wave rectifiers.
44.
Induction heating systems require low frequency inverters.
Answer: Option
Explanation:
It uses high frequency inverter.
45.
A single phase half wave controlled rectifier circuit is feeding on RL load. The circuit has a freewheeling diode. The input voltage is v = Vm sin ωt. If I0 is the load current during the conduction of freewheeling diode, the KVL equation during the conduction of free wheeling diode is
Answer: Option
Explanation:
Load is short-circuited by free wheeling diode.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers