List of top Instrumentation Engineering Questions asked in Telangana State Post Graduate Engineering Common Entrance Test

The input resistance of the op-amp circuit shown is:

The output voltage \(V_o\) of the circuit is:

The operational amplifier uses differential input stage with a constant current source mainly to obtain:

A forward-biased silicon diode has a voltage drop of 0.64 V at negligible current. When the current is 1 A and it dissipates 1 W, the ON resistance of the diode is:

For the given circuit, the diode \( D \) is ideal. The power dissipated by the \( 300\ \Omega \) resistor is:

In the circuit shown, the ideality factor \( \eta \) of the diode is unity and the voltage drop across it is 0.7 V. The dynamic resistance of the diode at room temperature is approximately:

The common collector transistor configuration has the following property:

If both the junctions of a transistor are forward biased, then it will be in:

If the amplitude is proportional to the core movement, then the output of a Differential Transformer (LVDT) is a:

The least suitable transducer for static pressure measurement is:

The primary standard instrument used for calibrating vacuum is:

Which of the following meters has the lowest pressure drop for a given range of flow?

The thermocouple pair that gives the maximum sensitivity of around 273 K is:

A shaft encoder attached to a DC motor has a sensitivity of 500 pulses per revolution. A frequency meter connected to the encoder output indicates 5500 Hz. The speed of the motor in rpm is:

Which of the following is a derived unit in the SI system?

The transformation ratio in a transformer is (1-primary, 2-secondary, N-turns, E-voltage):

Fractional pitch winding is used in DC machines to:

Pirani gauge operation is based on the following principle:

Among bonded metal strain gauges, the foil type is more popular than wire type because:

The output of LVDT with input mechanical motion of 10 Hz and excitation frequency of 400 Hz will contain frequencies:

Poisson’s ratio of a metal is 0.35. Neglecting the piezo resistive effect, the gauge factor of the strain gauge made up of this metal is:

“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:

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

In a parallel RC circuit, the supply current always \underline{\hspace{2cm}} the applied voltage.

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: