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Alow-noise transducer is connected to an instrumentation system by a cable that generates thermal noise at room temperature. The information-bearing signal has a bandwidth of 6 kHz. The signal power delivered is Pin = 120 pW. Evaluate the condition on the amplifier noise temperature Ta such that the signal-to-noise ratio (SNR) is greater than or equal to 50 dB.
Q. What is the advantage of a two-stage overloaded RC coupled amplifier over a single stage one? What are it's uses? It is a frequently encountered configuration. Here, the tra
Q. When the two-wattmeter method for measuring three-phase power is used on a certain balanced load, readings of 1200W and 400W are obtained (without any reversals). Determine the
Addition of trivalent impurity to a semiconductor creates many (A) Holes. (B) Free electrons. (C) Valance electrons. (D) Bound electrons. Ans: Addition o
The stator and rotor of a three-phase, 440-V, 15-hp, 60-Hz, eight-pole, wound-rotor induction motor are both connected in wye and have the following parameters per phase: R1 = 0.5
Explain Dielectric constant. Dielectric constant: This is also termed as 'Permittivity'. All insulating material possesses an electrical capacitance. Such capacitance of unit d
A silicon foundry produced 1.2 million 8-inch wafers in 1997; how many 600 mil die is that? The foundry is scheduled to produce 20,000 12-inch wafers per month by the year 2001 us
Q. What do you mean by Capacitance? An ideal capacitor is an energy-storage circuit element (with no loss associated with it) representing the electric-field effect. The capaci
Q. A magnetic circuit is found to have an ac hysteresis loss of 10 W when the peak current is Im = 2 A. Assuming the exponent of Bm to be 1.5, estimate Ph for Im = 0.5A and 8A.
Give the properties of PVC. PVC- It is acquired from polymerisation of hydrogen chloride and acetylene in the presence of a catalyst as peroxides at about 50 0 C. Properties
Define diffusion length: Sol. Diffusion length is defined as the distance, travelled by free carriers before recombining. It may also be defined as the average distance cove
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