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Q1. | Which control action can never be used alone? |

A. | Proportional [Wrong Answer] |

B. | Derivative [Correct Answer] |

C. | Integral [Wrong Answer] |

D. | Both (b) and (c) [Wrong Answer] |

View Answer
Explanation:-
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**Also Read Similar Questions Below :**

⇒ If sound wave has an intensity of 10 Pa. The dB level is about

1.139 dB

11.39 dB

113.9 dB

1139 dB

⇒ Which of the following is not a valid logical expression in Pascal?

A > = B

A < = B

A = < B

A < > B

⇒ In an intrinsic semiconductor, the intrinsic charge concentration at any absolute temperature T is proportional to

T

T

^{2}

T

^{3}

T

^{4}

⇒ The Boolean function A + BC is reduced form of

AB + BC

AB + ABC

(A + B) (A + C)

(A + C)B

⇒ An instrument of accuracy class 1 can have an error equal to

+ 1% of reading

± 1% of reading

± 1% of full scale deflection

+ 1% of full scale deflection

⇒

*h*parameters are used in transistor analysis.

TRUE

FALSE

⇒

Match the following:

List I (F.T and F.S) | List II (Properties) | ||
---|---|---|---|

A. | Fourier Series | 1. | Discrete, Periodic |

B. | Fourier Transform | 2. | Continuous, Periodic |

C. | Discrete Time Fourier | 3. | Discrete aperiodic |

D. | Discrete Fourier Transform | 4. | Continuous, aperiodic |

A-3, B-4, C-2, D-1

A-1, B-2, C-4, D-3

A-3, B-2, C-4, D-1

A-1, B-4, C-2, D-3

⇒ In control systems the output of sensor usually, is

analog electrical signal

digital electrical signal

mechanical signal

analog or digital electrical signal

⇒ A meter has a resistance of 1 Ω and full scale deflection current of 1 mA. To convert into an ammeter of 1 A range, the shunt resistance should be

1000 Ω

1 Ω

0.01 Ω

0.001 Ω

⇒ If the absolute value of a number is less than decimal 1, the sign of exponent in floating point representation is

zero

negative

zero or negative

positive

⇒ The phase difference (

*j*ω -

*p*

_{1})

phasor directed from

*p*

_{1}to

*j*ω

phasor directed from origin to

*p*

_{1}

phasor directed from origin to

*j*ω point

phasor directed from

*j*ω to

*p*

_{1}

⇒ The open loop frequency response of a unity feed back system is as u

20 dB and 15°

20 dB and 25°

6 dB and 15°

6 dB and 25°

⇒ There is no radiation at right angles to the plane of the array, is end fire array.

TRUE

FALSE

⇒ Conductivity is measured in terms of

mho/metre

ohm/metre

mho/metre

^{2}

ohm/metre

^{2}

⇒ If

*x*

*= 2*

_{k}*for*

^{k}*k*≤ 0 and = 0 for

*k*> 0 X(

*z*) = 2/(2 -

*z*).

TRUE

FALSE

⇒ Ferromagnetic materials show hysteresis in B - H characteristic. As the magnetic field in increased slowly from zero value, what is the first process which sets the material to give net magnetization?

Growth of favourably oriented domains at the cost of other domains by reversible boundary displacements

Growth of favourably oriented domains at the cost of other domains by irreversible boundary displacements

Domain wall orientation

A combination of processes (a) and (c) above

⇒

Match the following:

List I | List II | ||
---|---|---|---|

A. | Continuous and aperiodic | 1. | Fourier representation is continuous and aperiodic |

B. | Continuous and Periodic | 2. | Fourier representation is discrete and aperiodic |

C. | Discrete and aperiodic | 3. | Fourier representation is continuous and periodic |

D. | Discrete and periodic | 4. | Fourier representation is discrete and periodic |

A-3, B-2, C-4, D-1

A-1, B-3, C-2, D-4

A-1, B-2, C-3, D-4

A-2, B-1, C-4, D-3

⇒ In figure base current is 10 μA and β

_{dc}= 100. Then V

_{E5 V10 V15 V20 V}

⇒

**Assertion (A):** The conductivity of an *n* type semiconductor increases with increase in temperature and increase in density of donor atoms.

**Reason (R):** Diffusion of carriers occurs in semiconductors.

Both A and R are true and R is correct explanation of A

Both A and R are true but R is not a correct explanation of A

A is true but R is false

A is false but R is true

⇒ At room temperature the current in an intrinsic semiconductor is due to

holes

electrons

ions

holes and electrons

⇒ Which one of the following power amplifier has the maximum efficiency?

Class A

Class B

Class AB

Class C

⇒ Oscillator with best frequency stability is

Crystal oscillator

Phase shift oscillator

Clapp oscillator

Hartley oscillator

⇒ In the following transistor circuit

*V*

_{BE}= 0. 7 V,

*r*= 25mV/I

_{c}_{E}, and β and the capacitance are very l

-180

-120

-90

-60

⇒ A CB amplifier has

*r*

_{e}= 6 Ω, R

_{L}= 600 Ω and a = 0.98. The voltage gain is

100

600 x 0.98

98

6

⇒

Match the following:

List I (Types of memory) | List II (Used As) | ||
---|---|---|---|

A. | DRAM | 1. | Cache memory |

B. | SRAM | 2. | Main memory |

C. | Parallel Access Registers | 3. | BIOS memory |

D. | ROM | 4. | CPU registers |

A-1, B-4, C-2, D-3

A-3, B-4, C-2, D-1

A-1, B-2, C-4, D-3

A-3, B-2, C-4, D-1

⇒ The output voltage waveform of a CE amplifier is fed to a dc coupled CRO. The trace on the screen will be

dc output voltage

ac output voltage

sum of dc and ac output voltage

either (a) or (b)

⇒ Which of the following are applications of position control systems?

Control of sheet and metal thickness in hot rolling mill

Missile guidance of ships

Radar tracking system

All of the above

⇒ For a symmetrical network

*h*

_{11}=

*h*

_{22}

*h*

_{12}=

*h*

_{21}

*h*

_{11}

*h*

_{22}-

*h*

_{12}

*h*

_{21}= 0

*h*

_{11}

*h*

_{22}-

*h*

_{12}

*h*

_{21}= 1

⇒ A message signal

*x*(

*t*) is amplitude modulated with carrier

*c*(

*t2ω*

3ω

1ω

0.5ω

3ω

1ω

0.5ω

⇒ The logic operation that will selectively clear bits in register A in those positions where these are 1 's in the bits of register B is given by

A ← A + B

A ← AB

A ← A + B

A ← AB

⇒ The logic operation that will selectively clear bits in register A in those positions where these are 1 's in the bits of register B is given by

A ← A + B

A ← AB

A ← A + B

A ← AB