Bellows converts pressure difference into displacement pressure difference into

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Question
Bellows converts
Options
A. pressure difference into displacement
B. pressure difference into voltage
C. displacement into pressure difference
D. either (a) or (c)

Correct Answer

pressure difference into displacement

Explanation

To measure pressure, it is convenient to convert pressure into displacement and then use a displacement transducer.

Automatic Control Systems problems

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1. For type 2 system, the magnitude and phase angle of the term (j?)² in the denominator, at ? = 0, are respectively
Options
A. 0 and - 90�
B. 0 and + 90�
C. infinity and - 180�
D. infinity and + 180�

2. A system has its two poles on the negative real axis and one pair of poles lies on j? axis. The system is
Options
A. stable
B. unstable
C. limitedly stable
D. either (a) or (c)

3. For the system of the given figure, the damping ratio of closed loop poles is
Options
A. 1.5
B. 1
C. 0.5
D. 0.25

4. In a two phase ac servomotor rotor resistance is R and rotor reactance is X. The speed curve will be linear if
Options
A.
B.
C.
D. X² = R

6. In the given figure shows pole-zero plot. If steady state gain is 2 the transfer function G(s) is
Options
A.
B.
C.
D.

7. In the given figure the input frequency is such that R << X_c, then
Options
A. v₀ lags v_i by 90�
B. v₀ leads v_i by 90�
C. v₀ and v_i are in phase
D. either (b) or (c)

9. In Bode diagram (log magnitude plot) the factor in the transfer function gives a line having slope
Options
A. -20 dB per octave
B. -10 dB per octave
C. -6 dB per octave
D. -2 dB per octave

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