# An energy signal has G(f) = 20. Its energy density spectrum is

24 views
An energy signal has G(f) = 20. Its energy density spectrum is A) 20 B) 100 C) 400 D) 800

An energy signal has G(f) = 20. Its energy density spectrum is 400

## Related questions

An energy signal has G(f) = 10. Its energy density spectrum is:  (1) 10 (2) 100 (3) 50 (4) 20

In an induction motor if the flux density is reduced to one-half, of its normal value then the torque will  (1) reduce to one-half (2) reduce to one-fourth (3) remain unchanged (4) increase four times

Spectrum analyzer

Define magnetic flux density and state its formula.

In 8085, whenever a signal is received at TRAP terminal, its program execution is transferred to a subroutine on address A) 0000 H B) 002C H C) 0024 H D) 0004 H

What is the permissible flux density in case of cold rolled grained oriented steel?

If a signal band limited to fm is sampled at a rate less than 2fm, then the constructed signal will be A) Large in amplitude B) Small in amplitude C) Distorted D) Distortion less

Flux density formula

Define the following terms: i) Magnetic flux density, ii) Reluctance, iii) Magneto-motive force, iv) Permeance.

Give the relation between magnetic field strength, magnetic flux density and permeability.

In lead acid battery the density of acid indicates the  (1) charge of the battery (2) level of acid (3) e.m.f of the battery (4) damage of the plates

The sampling rate to avoid aliasing for the signal m(t) = 100 cos 200ωt will be A) ≥1/25 sec B) ≥1/50 sec C) ≤1/25 sec D) ≤ 1/50 sec

A 200 V, 5 A d.c. energy meter is tested at its marked ratings. The resistance of the pressure circuit is 8000 Ω and that of current coil is 0.1 Ω. The power consumed when testing the meter with phantom loading with current circuit excited by a 6 V battery is (A) 2.5 W (B) 5 W (C) 32.5 W (D) 35 W

If it takes a transmitted signal 1m sec to go up to the target and come back after reflection, how far is the transmitter from the target? A) 150 Km B) 150 m C) 15 Km D) 1500 m

What is the Laplace transform of step signal of 5 units magnitude?  A) 5s B) 5/s C) s/5 D) 1/s

The time base signal in Cathode Ray Oscilloscope (CRO) is  (1) A square wave signal (2) A sawtooth signal (3) A triangular wave signal (4) A sinusoidal signal

The standard for long distance analog signal transmission in process control industry is (A) 4-20 mV (B) 0-20 mA (C) 4-20 mA (D) 0-5 V

What is a signal in science?

What is the use of digital signal processing?

Why digital signal processing is important?

What is the use of signal flow graph?

Which of the following device is used for coupling microwave energy?  A) Resonator B) Waveguide C) Loop D) Antenna

Phantom loading for testing of energy meter is used (A) to isolate the current and potential circuits (B) to increase power loss during testing (C) for meters having low current ratings (D) to test meters having a large current rating for which loads may not be available

what is fermi energy

Specific energy consumption of an electric train is the ratio between (A) Specific energy output at driving wheels and efficiency of the traction motor (B) Specific energy output at driving wheels and efficiency of the transmission gear (C) Specific energy output of driving motor and efficiency of the driving wheels (D) Specific energy output at driving wheels and efficiency of the (motor + transmission gear)

An induction type energy meter is found to run fast. Correction for this error can be made by  (A) Over-load compensation. (B) Voltage compensation. (C) Moving the brake magnet away from the centre of the disc. (D) Moving the brake magnet towards the centre of the disc.

Analog signal

Integration of step signal gives (A) Impulse signal. (B) Ramp function. (C) Parabola. (D) Square pulse.

What do you mean by signal processing?

What do you mean by signal and system?

Explain transformer isolated drive circuits providing both signal and power.

Can you convert analog signal to digital?

What are the advantages of a digital signal?

How does signal processing work?

Derive an expression for energy stored in a magnetic field .

The clock frequency of an 8085 microprocessor based system is 3 MHz. What should be the minimum pulse width of the INTR signal so that it is recognized successfully? A) 5.6 µs B) 5.7 µs C) 5.8 µs D) 5.9 µs

An energy meter has a constant of 600 rev/kWh. If the meter makes 10 revolutions in 20 s, what is the load in kW?  (A) 0.75 kW (B) 1.5 kW (C) 3 kW (D) 6 kW

The large signal bandwidth of an opamp is limited by its:  (1) Loop gain (2) Slew rate (3) Output impedance (4) Input frequency

What is Time of Day tariff? How it help in energy conservation?

What is mass energy equivalence? Give one example. Define mass defect and binding energy.

What is renewable source of energy? State two examples for the same.

What is meant by energy meter constant?

Why energy meter is integrating type measuring instrument?

In fuel cell the __________ energy is converted into electrical energy.  (A) Mechanical (B) Chemical (C) Heat (D) Sound