1 Crore+ students have signed up on EduRev. Have you? 
Calculate V_{CE} in the figure (in volts).
First check to see if R_{in (Base)} can be neglected.
=150 x kΩ = 150kΩ
Since 150kΩ is more than 10 times R_{2}. The condition is met and R_{in(base)} can be neglected.
= 6.88 V
Then, V_{E} = V_{B} + VBE
= 6.88 + 0.7
V_{E} = 7.58V
l_{E} = 2.42 mA
From I_{E} we can determine l_{c} and V_{CE
}
and V_{C} = I_{C}R_{C} = 2.42 mA x 2.2kΩ
= 5.32
= 2.26V
The correct answer is: 2.26
Calculate the minimum value of C_{2} (in μF) if the amplifier operate over a frequency range of 2kHz to 10kHz?
R_{E} = 560Ω
X_{C} of the bypass capacitor C_{2} should be
The capacitive value, at the minimum frequency of 2kHz
The correct answer is: 1.42
If the Qpoint is 2 Vand 1 mA with the help of a feedback resistor R_{B}. β = 100, then what is the value of R_{B} in? (Take V_{BE} = 0.7V).
The correct answer is: 130
Calculate the value of V_{CE} (in Volts) for the circuit shown below. (β = 100 and V_{BE }=0.7V).
Let us use Thevenin’s theorem
Now, applying KVL to Base circuit
= 9.45 μA
l_{C} = 0.945mA
Now, V_{cc} = I_{c}R_{c}  V_{CE}
The correct answer is: 6.22
A npn transistor circuit has ∝ = 0.985. If I_{C} = 2mA then the value of l_{B} (in mA) is?
= 0.03 mA
The correct answer is: 0.03
Calculate the collector voltage V_{C} of the transistor circuit should be in the figure :
(given = 0.96, l_{CBO} = 20μA , V_{BE} = 0.3V, R_{B} = 100/kΩ)
Similarly,
The correct answer is: 4.72
In the below figure, the minimum value of l_{B} (in mA) required to saturate this transistor if [Neglect V_{CE(sat})].
Since,V_{CE(Sat)} is neglected (assume to 0V)
The correct answer is: 50
In a certain oscillator, A_{v} = 50. The attenuation of the feedback circuit must be?
An amplifier of gain 1000 is made into a feedback amplifier by feeding 9.9% of its output voltage in series with the input opposing. If f_{l} = 20Hz and f_{h} = 200kHz for the amplifier without feedback then due to the feedback what is the new frequency (in kHz)?
The correct answer is: 20000
V_{CE }approximately equals ________ when a transistor switch is in saturation.
"Saturation" in a transistor switch circuit is achieved when the voltage across the collector/ emitter (V_{CE}(sat)) is less than or equal to . 1 to . 3 volts  depending on the type of transistor. At that voltage point, the transistor appears to act like a simple SPST mechanical switch that has been closed (On).
91 videos21 docs25 tests

Use Code STAYHOME200 and get INR 200 additional OFF

Use Coupon Code 
91 videos21 docs25 tests








