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- A digital voltmeter has a read-out range from 0 to 9999 counts. When full scale reading is 9.999 V, the
- A 0 to 300V voltmeter has a guaranteed accuracy of 1% of full scale...
- A 0-10 A ammeter has a guaranteed accuracy of 1% of full scale deflection, the limiting error while reading
- A galvanometer of resistance 40 ohms requires a current of 10mA to give a full-scale deflection.
- A moving coil meter has a resistance of 3 Ω and gives full scale deflection with 30 mA. To measure voltage up
- If two meters X and Y requires 40mA and 50mA respectively, to give full scale deflection, then:
- A dc voltmeter has a sensitivity of 1000 Ohm/V. When it measures half full scale in 100 V range, the current ...
- The voltage regulation for 0.95 lead pf is zero for an alternator. If so, the voltage regulation for 0.9 lead...
- The current in a 200 mH coil increases from 2 to 5 A in 0.1 Second. What is rate of change of current?
- The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100Ohm. ...
- The full-scale deflection current of an ammeter is 1 mA and its internal...
- What is the value of capacitance required to improve power factor from 0.7 to 0.9.
- The full scale range of PMMC voltmeter is 100 V and its sensitivity is 1000 Ω/V. If the meter reads 50 V, the
- A permanent magnet moving coil ammeter has a coil resistance of 99 ohm and Full Scale Deflection (FSD)
- A moving coil instrument has a resistance of 10 W and gives full scale deflection when carrying
- An induction motor operating at 0.8 pf lagging is consuming 300 kW. A zero real power consuming
- An ammeter of 0-25 A range has a guaranteed accuracy of 1% of full scale reading. The current measured...
- A moving coil instrument of resistance 5 Ohm requires a potential difference of 75 mV to give a full scale...
- A synchronous motor operates at 0.8 pf lagging. If the field current of the motor is continuously
- The ratio of maximum displacement deviation to full scale deviation of the instrument is called?
- Energy stored in electrostatic field of capacitance formula
- If the distance of screen from a CRT to center of deflection plates is 15 cm, the length of
- Inductance and capacitance in the electrostatic system of units has the dimensions of
- A 12 -pole, 440 V, 50 Hz, 3 -phase synchronous motor takes a line current of 100 A at 0.8 pf leading....
- In the case of an instrument reading of 8.3 V with a 0 to 150 voltmeter having a guaranteed accuracy of
- A 400/200 volts transformer has pu impedance of 0.05. The HV side voltage required to circulate full load...
- The output voltage of a battery drops from 100 V with zero load current to 80 V when load current is 2 A.
- In a digital voltmeter, the oscillator frequency is 400 kHz, the ramp voltage falls from 8V to 0V in 20 m sec.
- An ac voltmeter using full -wave rectification and having a sinusoidal input has an ac sensitivity equal to
- Materials, whose resistivity at very low temperatures plunges from a finite value to zero and remains there...
- What is the pitch factor of a 4 pole alternator having 36 slots and a coil span of 1 to 8?
- what will be the capacitance if three capacitors connected in parallel each having value of 0.5 micro Farad ?
- Which of the following plants will take least time in starting from cold conditions to full-load operation?
- For a short transmission line with r/x ratio of is 1.0, the regulation will be zero when the load power factor is
- In a 2 kW, 200 V, 1000 rpm. DC series motor the torque at full load was found to be 0.3 N -m. The torque at
- Series resistance required to read 0-250 V with a moving coil instrument of internal resistance 2 ohm and full
- A 12 bit counter type A/D converter uses a 1 MHz clock. If the full scale output is +10V, its resolution output is
- A unit step voltage is applied at t = 0 to a series RL circuit with zero initial conditions
- For an ADC, full scale output voltage is about 10 V.For a resolution of about 9.78mV, number of bits required is ...
- Transposition of communication and power lines reduces the induced voltages due to electrostatic and...
- The sensitivity of a voltmeter using 0-5 mA meter movement is
- The efficiency of a transformer at full load 0.8 p.f lagging is 90%. Its efficiency at full load 0.8 p.f...
- In an actual transformer the iron loss remains practically constant from no load to full load because?
- A system function has a pole at s=0 and a zero at s= -1. The constant multiplier is unity. For an excitation...
- A cable has inductance of 0.22 mH per kilometer and capacitance of 0.202 µF per kilometer. The surge
- The emf induced in a coil is 1 volt when current in it changes from 0 to 100 mA in time 10mS. Its inductance...
- A 4 bit counter is used to count from 0,1,2...n. Value of “n” is
- For eliminating the effect of earth capacitance from the bridge network we use:
- The flux density in air at a point 40 mm from the centre of a long straight conductor A is 0.03 T. If the return conductor is a considerable distance away, calculate the current.
- A 150 V moving iron voltmeter of accuracy class 1.0 reads 75 V when ...