537 questions and answers
What is strriup ?What is the function of strriup?
A stirrup is a piece of steel reinforcement used in concrete beams and columns. It's usually shaped like a closed loop and wraps around the main vertical rebar.
What is the minimum specing of strriup according IS456:2000?
According to IS 456:2000, the Indian Standard for plain and reinforced concrete, the minimum spacing for stirrups in beams is specified as follows:
What is Bent up bar in Beam?
A bent-up bar in a beam is a type of reinforcement bar (rebar) that is angled or bent upwards at a specific point along the length of the beam.
For a broadcast super heterodyne AM receiver having no RF amplifier, the loaded quality factor Q of the antenna coupling circuit is 100. Now if the intermediate frequency is 455 KHz, then determine the image frequency and its rejection ratio at an incoming frequency of 1 MHz.
Given that quality factor Q = 100 The intermediate frequency fi = 455KHz
Write short notes on:
The second method of the non-coherent AM detection is Envelope Detector. In this circuit modulated signal Vin(t) is used as an input signal. The source resistance RS is connected in series with the active non-linear p-n junction diode.
What are cross field device? What role does the dc magnetic field play in their normal operation?
The cavity magnetron is a cross field device. Here the electric field between anode and cathode is radial whereas the magnetic field produced by a permanent magnet is axial.
What do you mean by cut off frequency of a waveguide? On what factor does the cut off frequency of a waveguide depend? Derive expression in support it.
Several modes of electromagnetic waves, corresponding to the solution of the Maxwell’s equations, propagate inside a waveguide. A given waveguide has a definite cut-off frequency for each allowed mode.
Compare PAM, PWM and PPM
PAM, PWM and PPM stands for Pulse Amplitude Modulation, Pulse Width Modulation and Pulse Position Modulation. In the PAM system carrier signal is rectangular pulse and that is why this system is called PAM.
An AM transmitter has an un-modulated carrier power of 10 kW. It can be modulated by a sinusoidal modulating voltage to a maximum depth of 40%, without overload. If the maximum modulation index is reduced to 30%, what is the extent up to which the modulated carrier power can be increased without overloading?
Given that Pc = 10kW Modulation index µ = 0.4
Find the Fourier transform of the following:
Fig. 1
From the figure, we have the function x(t) = 1 for 0 < t ≤ τ/2 and otherwise x(t) = 0
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