engineering recuitment BSPHCL JE Electrical 2024 Mock Test Sensors and Industrial Instrumentation Measurement of Flow Electromagnetic
In microwave oven heat is generated by electo-magnetic rays with operating frequencies in the _________ range.
1
300 - 650 GHz
2
900 - 2450 MHz
3
300 - 450 kHz
4
100 kHz - 150 MHz