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A heater element is made of nichrome wire having resistivity equal to 100 × 10 -8 ohm-m. The diameter of the wire is 0.4mm. Calculate the length of the wire required to get a resi
Q. Illustrate Frequency-shift keying? Digital transmission by FSK is a nonlinear modulation method that is appropriate for channels that lack the phase stability needed to perf
Suppose that a video signal, having W = 5 MHz, is transmitted via FM with f = 20 MHz. For 1/100 ≤ B/fc ≤ 1/10, determine the bounds on the carrier frequency. Use WFM ∼ = 2( ω + 2W
The focal length of a concave spherical mirror is equal to 1 meter. What is the radius of curvature of this mirror? Ans: The radius of curvature of this mirror is 2 meter.
'Electric drives' is a term used to describe DC and AC electric motors that provide continuous rotarmotion. They are often controlled by 'electronic drivesystems' designed to contr
Q. Cause of sparking at the brushes of a DC Motor? Ans: Sparking at the brushes can be occur due to poor quality of carbon brushes, loose connection, poor armature of carbon
In n type semi conductor added impurity is (A) Pentavalent. (B) Divalent. (C) Tetravalent. (D) Trivalent.
How is 8255 (Programmable Peripheral Interface) configured if its control registercomprises 9B h. Ans 9BH => 1001 1011 => b6b5=00-> Mode0 b4=0-> Port A as
Describe soldering materials and their uses. The process of joining two or more metals is termed as soldering. An alloy of two or more metals of low melting point utilized for
What is the difference between a hybrid pi and an re model?
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