List of top Instrumentation Engineering Questions

The value of the alternating current which is equal to the DC current that gives the same heating effect over a fixed period of time is called:

“Any linear circuit containing several voltage sources and resistances can be reduced to an equivalent single voltage source and resistance” is according to:

“Any two-terminal active circuit containing voltage sources and resistances, when viewed from its output terminals, is equivalent to a constant current source and an internal resistance.” This represents:

“A linear bilateral network containing several sources... the algebraic sum of the currents or voltages of each individual source considered separately with all others made inoperative” is according to:

If there is a common branch with a voltage source alone between two meshes, then the combination is called:

Voltage across a short circuit is:

Which of the following laws states that “Algebraic sum of the currents at a node is zero”?

Internal resistance of an ideal voltage source is:

"Whenever magnetic flux linked with a closed coil changes, an induced emf is setup in the coil and lasts as long as the change in magnetic flux continues." This is:

The mechanical force per unit charge at a given point is called:

The energy stored in a capacitor \( C \) when a voltage \( V \) exists across it is:

In an electromagnetic blood flow meter, the induced voltage is directly proportional to the

A standard three-lead frontal plane ECG is taken from a person with a normal heart. The peak amplitude of R wave is

The treadmill test is used to diagnose

Gas chromatography is used for

Korotkoff sounds are used

IR spectroscopy

A psychrometric chart is used to determine

The Geiger counter has high quantum efficiency in the wavelength range of

In the standard 12-lead ECG recording system, the minimum number of electrodes required to be attached to the human subject for recording any one of the unipolar chest lead signals is

Collimated light beams from a He-Ne laser and a sodium vapor lamp are focused using a lens.
The size of the spot at the focal point due to the laser is relatively smaller because

The phase margin of the system for which the loop gain \( GH(j\omega) = \frac{A_1}{(j\omega + 1)^3} \) is:

An optical fiber has a refractive index of 1.641 for the core and 1.422 for the cladding.
The critical angle above which a ray will be totally internally reflected is

A step index optical fiber whose refractive indices of the core and cladding are 1.44 and 1.40 respectively, is surrounded by air. Its numerical aperture is