For an npn transistor connected as shown in figure V_{BE} = 0.7 volts. Given that reverse saturation current of the junction at room temperature 300° AT is 10^{13} A. the emitter current is
In the bistable circuit shown in the figure, the ideal OP Amp lias saturation levels of ± 5 V. The value of R_{1} (in kΩ) that gives a hysteresis width of 500 mV is__________
(Answer should be an integer)
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Let the magnitude of the gain in the inverting OpAmp circuit shown be x with switch S_{1} open. When the switch is closed, the magnitude of gain becomes.
Consider the circuit shown in the figure. Assuming V_{BE1} = V_{EB2} = 0.7V, the value of the dc voltage V_{C2} (in volt) is ___________ .
(Round off to one decimal place)
A Wein bridge oscillator is shown in figure, which of the following statements are true, if 'f' is the frequency of oscillation?
In a voltage follower opamp circuit, find the closed loop gain V_{0}/V_{s} if the open loop gain = 2
In the shunt regulator shown below, the V_{z} 8.2 V and V_{BE} = 0.7 V. The regulated output voltage V_{0} is
Let denote the Exclusive OR (XOR) operation. Let '1' and '0' denote the binary constants. Consider the following Boolean expression for F over two variables P and Q :
The equivalent expression for F is
In the OpAmp circuit shown, assume that the diode current follows the equation I = I_{s} exp (V/V_{T}). For V, = 2V, V_{0} = V_{01} and for V_{i} = 4V, V_{0} = V_{02}, The relationsliip between V_{01} and V_{02} is
A regulated power supply, shown in figure below, lias an unregulated input (UR) of 15 volts and generates a regulated ouput. Use the component values shown in the figure.
The power dissipation across the transistor Q_{1} shown in the figure is
The output voltage of the regulated power supply shown in figure is
In the circuit shown, assume that diodes D_{1} and D_{2} are ideal. In the steadystate condition, the average voltage V_{ab} (in Volts) across the 0.5 μF capacitor is
(Answer should be an integer)
The figure shows a halfwave rectifier. The diode D is ideal. The average steady state current (inAmperes) through the diode is approximately____________
(Answer should be an integer)
The amplifier circuit shown in the figure is implemented using a compensated operational amplier (OPAmp), and has an openloop voltage gain, A_{0} = 10^{5} V/V and an openloop cutoff frequency, f_{c} = 8 Hz.
The voltage gain of the amplifier at 15 kHz. in V/V, is_______________
(Round off to two decimal places)
Consider the circuit shown in the figure Assume basetoemitter voltage V_{BE}  0.8 V. and common base current gain(α) of the transistor is unity.
The value of the collectortoemitter voltage V_{CE}(in volts) is_________________.
(Answer should be an integer)
For the given circuit, value of the base current ( I_{b}) of the npn transistor will be___________mA.
(β is the current gain and assume OpAmp as ideal).
(Round off to three decimal places)
Transform the following logic circuit (without expressing its switching function) into an equivalent logic circuit that employs only NAND gates each with 2inputs.
The number ofNAND sate required to implement y = is__________
(Answer should be an integer)
1 docs34 tests

1 docs34 tests
