If the output of a transistor amplifier is 5V rms and the input is 100 mV rms, the voltage(a) 5 (b) 500 (c) 50 (d) 100
Question
If the output of a transistor amplifier is 5V rms and the input is 100 mV rms, the voltage
- (a) 5
- (b) 500
- (c) 50
- (d) 100
Solution
The question seems to be asking for the voltage gain of a transistor amplifier. The voltage gain (Av) of an amplifier is given by the ratio of the output voltage to the input voltage.
Here's how you calculate it:
Step 1: Convert all voltages to the same units. In this case, the output voltage is already in volts (V), but the input voltage is in millivolts (mV). 1V = 1000mV, so 100mV = 0.1V.
Step 2: Use the formula for voltage gain, which is Av = Vout/Vin.
Step 3: Substitute the given values into the formula. So, Av = 5V / 0.1V = 50.
So, the voltage gain of the amplifier is 50. Therefore, the answer is (c) 50.
Similar Questions
In a given transistor amplifier, 𝑅𝐶 = 2.2𝑘Ω 𝑎𝑛𝑑 𝑟𝑒′ = 20Ω, 𝑡ℎ𝑒 𝑣𝑜𝑙𝑡𝑎𝑔𝑒 𝑔𝑎𝑖𝑛 𝑖𝑠(a) 2.2 (b) 110 (c) 20 (d) 44
In a transistor amplifier, if the base-emitter junction is open, the collector voltage is(a) 𝑉𝐶𝐶 (b) 0V (c) Floating (d) 0.2V
An amplifier has an input signal voltage of 0.054 mV. The output voltage is 12.5 V. The voltage gain in dB is
3v, 5v and 7v are the three input voltage applied to the inverting input terminal of averaging amplifier. Determine the output voltage?
2v, 4v and 6v are the three-input voltage applied to the inverting input terminal of averaging amplifier. Determine the output voltage?
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.