4. Describe with the help of a diagram how differential pressure transmitter can be used to measure level? 5. Fill Table 3 below with the theoretical readings of the flow measurement using electronic pressure transmitter and pneumatic differential pressure transmitter differential Table 3 Water flow Electronic differential Pneumatic differential pressure transmitter output (mA) pressure transmitter output (psi) (%) 25 50 75 100

Q1. An FM transmitter has the block diagram shown in Figure Q1. The audio frequency response is constant over the 20 Hz to 20 kHz audio band. The FM output signal is to have a carrier frequency of 90.7 MHz and a peak deviation of 75 kHz. (b) Calculate the frequency fo of the oscillator. FM exciter fc = 5.00 MHz 1998* Oscillator fo= ? Bandpass filter Figure Q1. Frequency multiplier Class C output amplifier

Which statement out of the 5 is TRUE, Explain Why (50 Words) Pulse width modulation (PWM) can be used to control the speed of a DC motor. Whichstatement is correct?1. The ratio of the ON-times (supply voltage) and OFF-times (zero volt) send to theterminals of a DC motor is proportional to the average of the motor acceleration.2. PWM can be used to modulate the magnetic width of a brush-less AC motor.3. PWM modifies the pulses sent to a motor which in turn adjust the motor torqueproportionally to the pulse ratio.4. PWM can be used to adjust the average voltage delivered by a power source.This is achieved by rapidly switching the power signal on and off. Longer on-timescompared to the off times leads to a higher average power seen by the load, e.g., aDC motor.

When the triac is in the OFF state: Output module terminal strip Triac switch LED output L1 status indicator Fuse Optical isolator, Field wiring Digital logic circuit Load L2 Internal module circuit Simplified diagram for a single output of a discrete AC output module. O the rated nominal current flows through the lamp O the rated surge current flows through the lamp O zero current always flows through the load small leakage current may flow through the load a

250 200 SCC 150 7.5 100 5.0 50 2.5 25 s0 75 100 125 150 Field excitation, A VOLTAGE REGULATION Open-circuit voltage, Armature short-circuit current,

Draw a simple pulse detector (positive-edge) diagram and explain how it works.

What are the 8 basic electrical safety analyzer functions?

Final The following figure, presents the frequency synthesizer of an FM receiver. The 'Programmable frequency divider' is set to divide the frequency by 535. Determine the output frequency of the VCO in MHz. [Course Learning Outcome 10] Varactor-tuned local oscillator 98.8-118.6 MHz VCO output Frequency prescaler +8 Programmable frequency divider 494 to 593 Crystal oscillator 100 kHz RLOT K Varactor tuning voltage Loop filter 25 kHz Phase detector Frequency scaler 25 kHz 4 ho

Choose the correct mode of operation for each MOS band diagram below. Vacuum level Vacuum level En E-9cV EF E₂ Vacuum level (1) E₂ Vacuum level (2) ------₁ E (3) (4) 1 = accumulation, 2 = flat-band, 3 = = depletion inversion, 4 = 1 flat-band, 2 = accumulation, 3 = inversion, 4 depletion 1 flat-band, 2 = inversion, 3 = depletion, 4 = accumulation 1 flat-band, 2 = accumulation, 3=depletion, 4 = inversion 1 = flat-band, 2 = depletion, 3 = inversion, 4= accumulation

can  I use a USB port for power supply in DIY oscilloscope?