ECE :: Exam Questions Paper
-
In the circuit shown below, the op-amp is ideal, the transistor has VBE = 0.6 V and β = 150. Decide whether the feedback in the circuit is positive or negative and determine the voltage V at the output of the op-amp
-
Which of the following addressing modes is used in the instruction PUSH B?
-
Consider a silicon p-n junction at room temperature having the following parameters:
Doping on the n-side = 1 x 1017 cm-3
Depletion width on the n-side = 0.1 μm
Depletion width on the p-side = 1.0 μm
Intrinsic carrier concentration = 1.4 x 1014F. cm-1.
Thermal voltage = 26mV
Permittivity of free space = 8.85 x 10-14F. cm-1.
Dielectric constant of silicon = 12. The peak electric field in the device is -
A single turn loop is situated in air, with a uniform magnetic field normal to its plane. The area of the loop is 5 m2 and the rate of change of flux density is 2 Wb/m2/s. What is the emf appearing at the terminals of the loop?
-
A compensated wattmeter has its reading corrected for error due to which one of the following parameters?
-
Personal computer cannot be used for which one of the following?
-
Which of the following output configurations are available in a TTL gate?
- Open collector output
- Totem pole output
- Tristate output
-
Which of the following be true for a CE transistor amplifier if the emitter resistor value is made equal to zero?
- Its gain will increase
- Its stability will increase
- Its gain will decrease
- Its stability will decrease
-
The feedback control system shown in figure is stable.
Whatsapp
Facebook
