Current Electricity and Electrical InstrumentHard
Question
A diode detector is used to detect an amplitude modulated wave of 60% modulation by using a condenser of capacity 250 pico farad in parallel with a load resistance 100 kilo ohm. Find the maximum modulated frequency which could be detected by it.
Options
A.10.62 MHz
B.10.62 kHz
C.5.31 MHz
D.5.31 kHz
Solution
For low pass filter, frequency greater than 
can′t pass trhough filter
⇒ f <
⇒ f < 
= 4 × 104 Hz
= 40 KHz
in given options maximum frequency below 40 KHz is 10.62 KHz
can′t pass trhough filter⇒ f <
⇒ f < = 4 × 104 Hz = 40 KHz
in given options maximum frequency below 40 KHz is 10.62 KHz
Create a free account to view solution
View Solution FreeTopic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
For a post office box, the graph of galvanometer deflection versus R (resistance pulled out of RB) for the ratio 100 : 1...In an a. c. circuit, the instantaneous e.m.f. and current are given by e = 100 sin 30 t i = 20 sin 30t-π4 In one cy...The value of current i in the circuit as shown in figure is :...Express which of the following setups can be used to verify Ohm′s law : -...Eight identical cells each of potential E and internal resistance r are connected in series to form a closed circuit. An...