1 Crore+ students have signed up on EduRev. Have you? 
Shown below is a timer 555 IC circuit
Frequency of the waveform generated by the above circuit is
It is just by figure only. But one can also calculate transfer function.
Consider the following feedback pair connection.
Collector current IC is ____________ mA.
If for a given programmable OPAMP, G_{1} is the gain, when only S_{1} is closed and G_{2} is the gain when only S_{2} is closed, then relation between G_{1} & G_{2} is?
When S_{1} is closed G_{1} = 1 it behaves like a voltage follower circuit. When S_{2} s closed
For given RC − Phase shift oscillator, by use of BJT if R_{1} = R_{2} = 10k, R_{c} = 2K, R = 2K, C = 0.01 µF
Q.
What is Minimum value of hfe for possible oscillation?
For given RC − Phase shift oscillator, by use of BJT if R_{1} = R_{2} = 10k, R_{c} = 2K, R = 2K, C = 0.01 µF
Q.
What is frequency of oscillation for circuit?
For a given CE, amplifier if β = 100, I_{C} = 1 mA, R_{S} = 1 KΩ, R_{c} = 5 KΩ, R_{e} = 200 Ω, h_{ie} = 2.5 K.
Q.
Calculate value of voltage gain
For a given CE, amplifier if β = 100, I_{C} = 1 mA, R_{S} = 1 KΩ, R_{c} = 5 KΩ, R_{e} = 200 Ω, h_{ie} = 2.5 K.
Q.
Calculate input impedance seen by source
For the given FET, circuit if
R_{D} = 20 kΩ rd = 50 kΩ
R_{S} = 2 kΩ µ = 50
Q.
Calculate value of v_{0}/v_{s}
For the given FET, circuit if
R_{D} = 20 kΩ rd = 50 kΩ
R_{S} = 2 kΩ µ = 50
Q.
Calculate value of output impedance
A MOSFET amplifier circuit is as shown below:
If device parameter K = 15 µA/V^{2}, then value of Transconductance of MOSFET is _________ ms.
The 3terminal linear voltage regulator is connected to a 10 ohm load resistor as shown in figure. If V_{in} is 10 volt, what is power dissipated in the Si transistor.
A sinusoidal oscillator is built using an amplifier of real gain A, infinite input impedance and feedback (β) network is shown in figure. If Z = jX, then what is the value of z_{0}.
Z+Z+Z_{0} =0 ⇒ Z_{0} =  2jX
Shown below is a network, in collector feedback mode.
Q.
The voltage gain Av is ……………., Assume r_{e} =
Shown below is a network, in collector feedback mode.
Q.
The current gain A_{i} is ≈
A power amplifier delivers 250 watt output at 50% efficiency. If ambient temp. is 25°C and maxm allowable junction temp. is 150°C, then what is value of Maximum thermal resistance which can be tolerated.
Numerical Anser type question
Q.
For a BJT, CEmode, Base to emitter capacitance (Cπ) is 10 times the collector to base capacitance (Cµ). If transistor is biased at quiescent collector current ICQ = 1 mA, and its short circuit unity gain frequency is 0.909 M rad/sec, then the value of Cπ is _______ nF.
Voltage reference diode means zener diode
What should be values of components R & R2 such that frequency of weinbridge oscillator is 300 HZ, if C = 0.01 µF, R1 = 12 kΩ.
20 docs261 tests

Use Code STAYHOME200 and get INR 200 additional OFF

Use Coupon Code 
20 docs261 tests









