WHAT IS DOPPLER EFFECT? WHERE IT IS APPLIED?
Answer / guezz who
is the change in frequency of a wave (or other periodic
event) for an observer moving relative to its source. It is
commonly heard when a vehicle sounding a siren or horn
approaches, passes, and recedes from an observer. The
received frequency is higher (compared to the emitted
frequency) during the approach, it is identical at the
instant of passing by, and it is lower during the recession.
We can applied this to Sirens, astronomy, temperature
measurement, flow measurement, vibration measurement,
radar, velocity measurement, audio, underwater acoustics,
and medical imaging.
Is This Answer Correct ? | 2 Yes | 0 No |
while stroke checking of a linear control valve ,found its travel is in non linear ,what can be possible reason ? ( please answer send in mannanali65@gmail.com) pls pls pls if any body know
what barrier is used in process industry.
3 Answers ADMA OPCO, Process Industries,
What is critcal speed. what is resonant frequency. why we want to cross crtcal speed on higher RPM (early).
If any control valve create hunting problem, what is the possible reason and solution?
flow transmeter accuracy 0.075% of full scale & find ucertainty is 0.025 % so what is maximum limit band of uncertainty
How to Calibrate Ultrasonic flow Transmitter in Field
2. What is ultrasonic flowmeter?
i am confusing about differential pressure transmitter as i seen so many DPTs in different ranges how can we calculate level and flow with mmh20 plz tel me
what is use of communication wire in multipare cable(oil and gas field), why this communication wire not used in single pair cable?
Why we use 3-15 psi air for control valve input?
what is the diffrence between pressure safety valve & pressure relief valve....pls
What is Droop? What is Step/Gradient Limiter in Turbine Governor control?