How many types of analyzers are there?
The spectrum analysers are of two broad categories swept tuned analysers and real-time analyzers. Both the analysers display amplitude versus... View Article
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How is transmitting intensity calculated?
Intensity can be determined by taking the product of energy density at a point in space and the velocity at... View Article
Can we see polarized light?
Haidinger’s brush can be seen in the empty space in the sky and on the computer screen. It is the... View Article
What is unique about an azeotropic refrigerant mixture?
The azeotropic refrigerant mixture is a mixture of more than one component that acts as a single component refrigerant over... View Article
How do you separate benzene and water?
A mixture of water and benzene is not miscible therefore it can be easily separated using a funnel. The heavier... View Article
What is the best frequency for FM transmitters?
The frequency range best for FM transmission is 88–108 MHz band, this is the frequency range at which all the... View Article
What is the frequency spectrum of a signal?
The frequency spectrum of the signal is the distribution of the amplitude and phase of the different frequency components against... View Article
What are azeotropic refrigerants?
A refrigerant is either a pure compound or a mixture of two or more refrigerants. The mixture of more than... View Article
How is the high voltage generated?
Rectifiers are used to convert high voltage alternating current to high voltage direct current. Transformers are used to step up... View Article
When two or more refrigerants are mixed?
When two or more refrigerants are mixed together it forms an azeotropic mixture. Azeotropic refrigerant is a mixture of two... View Article
Why is the transistor not used as a rectifier?
In order to use a transistor as a rectifier, either the emitter-base segment or the collector-base segment must be used.... View Article
Why are coils made of copper?
Copper has a very low electrical resistance which means that it is easy for the current to flow through the... View Article
Which instrument is based on the induction principle?
The principle of induction is used in the following instruments Current lamp Induction cooking Induction motors Induction charging Graphical tablet... View Article
What causes the inductance?
When there is a flow of current in the circuit it causes a change in the magnetic field. The change... View Article
Can Capacitors be negative?
The capacitance of the capacitor is the ratio of the amount of electric charge stored on the plates of the... View Article
cos-1 (15 / 17) + 2 tan-1 (1 / 5) =
1) π / 2 2) cos-1 (171 / 221) 3) π / 4 4) None of these Solution: (4) None... View Article
2 tan-1 (1 / 3) + tan-1 (1 / 7) =
1) tan-1 (49 / 29) 2) π / 2 3) 0 4) π / 4 Solution: (4) π / 4... View Article
If sin-1 (x / 5) + cosec-1 (5 / 4) = ? / 2, then x =
1) 4 2) 5 3) 1 4) 3 Solution: (4) 3 sin-1 (x / 5) + cosec-1 (5 / 4)... View Article
If tan-1 2x + tan-1 3x = ? / 4, then x =
1) -1 2) 1 / 6 3) -1, 1 / 6 4) None of these Solution: (2) 1 / 6... View Article
tan-1 [a – b] / [1 + ab] + tan-1 [b – c] / [1 + bc] =
1) tan-1 a – tan-1 b 2) tan-1 a – tan-1 c 3) tan-1 b – tan-1 c 4) tan-1... View Article
