If response of a control system is to be free of offset and oscillation, the most suitable controller is

It is observed that in a certain sinusoidal oscillation, the amplitude is linearly dependent on the frequency f. If the maximum velocity during the oscillation is V, then V must be proportional to

A

f

B

$$\frac{1}{{\text{f}}}$$

C

$$\frac{1}{{{{\text{f}}^2}}}$$

D

f²

In a control system the output of the controller is given to

A

Amplifier

B

Sensor

C

Final control element

D

Comparator

A _____ device prevents the oscillation of the moving system and enables the latter to reach its final position quickly

A

deflecting

B

controlling

C

damping

D

any of the above

Temperature control of an exothermic chemical reaction taking place in a CSTR is done with the help of cooling water flowing in a jacket around the reactor. The types of valve and controller action to be recommended are

A

Air to open valve with the controller direct acting

B

Air to close valve with the controller indirect acting

C

Air to open valve with the controller indirect acting

D

Air to close valve with the controller direct acting

Response of a system to a sinusoidal input is called __________ response.

A

Impluse

B

Unit step

C

Frequency

D

None of these

একটি সরল দোলকের সুতার দৈর্ঘ্য 99 cm এবং এর দোলনকাল 2 sec হলে দোলক পিন্ডের ব্যাসার্ধ নির্ণয় কর। (The length of the string and period of oscillation of a simple oscillator are 99 cm and 2 sec, respectively. Find the radius of the oscillator.)

A

1.29 cm

B

7 mm

C

3.18 mm

D

0.28 cm

E

2.15 mm

You have configured a Group Policy Object (GPO) for the marketing oranization unit (OU) to prevent users from accessing My Network Places and from running System in Control Panel. You want the Managers Domain Local Group to be able to access My Network Places, but you still want to prevent them from running System in Control Panel. What should you do?

A

Add the Managers group to the access control list of the GPO. Disable the permission of the managers group to read and apply the Group Policy

B

Add the Managers group to the access control list of the GPO. Deny the permission of the managers group to read and apply the Group Policy

C

Create a second GPO in the OU. Add the Managers group to the access control list. Allow the managers group to apply the Group Policy. Deny the Authenticated Users group permission to read and apply th

D

Create a second GPO in the OU. Add the Managers group to the access control list. Allow the managers group to apply the Group Policy. Disable the Authenticated Users group permission to read and apply

E

None of above

একটি সাধারণ সুরেলা দোলনের (Simple harmonic oscillation) জন্য, কৌণিক স্থানচ্যুতি (angular displacement) নিচের কোনটির চেয়ে বেশি হতে পারে না?

A

3°

B

4°

C

6°

D

5°

সরল দোল গতিসম্পন্ন একটি বস্তু যখন তার সাম্যাবস্থান থেকে 2 cm দূরে, তখন তার গতিশক্তি স্থিতিশক্তির ও গুণ। বস্তুটির দোলনের বিস্তার কত হবে? (An object oscillating in simple harmonic motion has its kinetic energy 3 times the potential energy when the object is 2 cm away from its equilibrium position. What is the amplitude of the oscillation for the object?)

A

3 cm

B

1 cm

C

2 cm

D

4 cm

The frequency of oscillation of a compound pendulum is

A

1/2π √g.h/k2G +h2

B

1/2π √k2G +h2/g.h

C

2π√g.h/k2G +h2

D

2π√k2G +h2/g.h

If response of a control system is to be free of offset and oscillation, the most suitable controller is

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