CHEMICAL ENGINEERING

Question: A __________ type pressure sensing element is commonly used in aneroid barometer.
[A].

capsule

[B].

bellow

[C].

spiral tube

[D].

flat diaphragm

Answer: Option A

Explanation:

No answer description available for this question.

Question: __________ strain gauge is the most sensitive sensing element for strain measurement.
[A].

photoelastic

[B].

semiconductor

[C].

wire resistance

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: LVDT used for displacement measurement is a/an __________ transducer.
[A].

passive

[B].

active

[C].

capacitive

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Working of linear variable differential transducer (LVDT) is based on the principle of variable
[A].

capacitance

[B].

resistance

[C].

mutual inductance

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: Which of the following transducers is most commonly used for the measurement of shock and vibration ?
[A].

Linear variable differential transducer (LVDT)

[B].

Dial gauge

[C].

Accelerometer

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: For dynamic strain measurement, the wheatstone bridge used is of __________ type.
[A].

voltage sensitive null

[B].

voltage sensitive deflected

[C].

current sensitive deflected

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: __________ circuit is most commonly used to measure strain with the help of a strain gauge.
[A].

Ballast

[B].

Voltage balancing potentiometric

[C].

Simple current sensitive

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Angular displacement can be measured suitably by a
[A].

shaft encoder.

[B].

linear variable differential transducer (LVDT).

[C].

stroboscope.

[D].

tachometer.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Cascade control is
[A].

the continuous adjustment of the set point index of an automatic control loop by a primary (master) controller.

[B].

used when changes in process conditions cause serious upsets in the controlled variable.

[C].

useful to control flow from temperature.

[D].

all ‘a’, ‘b’ & ‘c’.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Floating control action
[A].

moves the final control element at constant speed in either direction in response to an error signal.

[B].

changes the position of the final control element from on to off.

[C].

is used to counteract rapid load changes.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.