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Q1. | The relationship of hysteresis loss to maximum flux density was first determined by |

A. | C. Steinmetz [Correct Answer] |

B. | G.R. Kirchoff [Wrong Answer] |

C. | Mr. Laplace [Wrong Answer] |

D. | Mr. Ampere [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ A monostable multivibrator has

no stable state

one stable state

two stable state

none of the above

⇒ The poles of an RC function

are simple and lie or negative real axis

are simple and lie on ω axis

must be complex conjugate

may be anywhere on

*s*plane

⇒ A computer window has a bar at its top to bear the name of window. This bar is called

title bar

status bar

menu bar

control bar

⇒ A NOR gate has 3 inputs A, B, C. For which combination of inputs is output HIGH

A = B = C = 0

A = B = C = 1

A = B = 1 and C = 0

A = C = 1 and B = 0

⇒ For the same length of arrays, half power beam-width of binomial array

is equal to that of uniform arrays

is less than that of uniform array

is more than that of uniform array

is negligible as compared to that of uniform array

⇒ A series RLC circuit has a resonance frequency of 1 kHz and a quality factor Q = 100. If each of R, L and C is doubled from its original value, the new Q of the circuit is

25

50

100

200

⇒ The maximum power dissipation capacity of a transistor is 50 mW. If the collector emitter voltage is 10 V, what is the safe collector current that can be allowed through the transistor?

5 mA

2.5 mA

10 mA

25 mA

⇒ A 300 V voltmeter has an accuracy of ± 2% of full scale deflection. When the reading is 222 V, the actual voltage

lies between 217.56 and 226.44 V

lies between 217.4 and 226.6 V

lies between 216 and 228 V

is exact 222 V

⇒ Temporary register in 8085 is a 16 bit register.

TRUE

FALSE

⇒ In a 5 x 7 dot matrix, format, to store 64 alphanumeric characters we require

1120 bits

2240 bits

33 bits

64 bits

⇒ The resistance of voltmeter affects the accuracy of measurement in loss of charge method.

TRUE

FALSE

⇒ A sinusoidal ac voltage of amplitude 100 V is applied to a rectifying device which offers 10 Ω resistance in forward direction and infinite resistance in reverse direction. The reading on hot wire ammeter will be

0.416666666666667

0.208333333333333

3.185 A

1.414 A

⇒ A coaxial line has L = 500

*n*H/m and C = 50

*p*F/m. The characteristic impedance is

500 Ω

250 Ω

100 Ω

50 Ω

⇒ The dynamic equalising circuit consists of a series combination of capacitor C and resistor R

_{C}across each thyristor. This resistance R

_{C}(along with parallel connected diode)

limits charging current

limits discharging current

limits both charging and discharging currents

none of the above

⇒ In a NOT gate the output is always the opposite of the input.

TRUE

FALSE

⇒ In a Weston synchronoscope the deflecting torque is zero when

currents in fixed and moving coils are in phase

currents in fixed and moving coils are out of phase by 90°

currents in fixed and moving coils are out of phase by 60°

none of the above

⇒ If Z is the number of zeros of 1 + G(

*s*) H(

*s*) in the right half

*s*plane. N is the number of clockwise encircle elements of (-1 +

*jo*) point. P is the number of poles of G(

*s*) H(

*s*) in right half

*s*plane. The Nyquist stability criterion can be expressed as

Z = N + P

Z = P/N

Z = N - P

Z = PN

⇒ The hexadecimal number system is

widely used in analyzing and programming microprocessors

an obsolete system no more in use

used in calculators only

none of the above

⇒

**Assertion (A):** RF tuner is called front end of TV receiver

**Reason (R):** RF tuner receives the TV signal and selects the required channel.

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

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

A is correct but R is wrong

A is wrong but R is correct

⇒ The main advantage of hexadecimal numbers is

ease of conversion from hexadecimal to binary and vice-versa

ease of conversion from hexadecimal to decimal and vice-versa

ease of conversion from gray code to binary and vice-versa

the use of numbers and alphabets

⇒ Two current sources each of rms value 10 A have frequencies 40 Hz and 50 Hz respectively. They are connected in series, the expression for resultant wave is

*i*= 10 sin 40

*t*+ 10 sin 50

*t*

*i*= 14.14 sin 40

*t*+ 14.14 sin 50

*t*

*i*= 14.14 sin 80 p

*t*+ 14.14 sin 100 p

*t*

*i*= 20 sin 80 p

*t*+ 20 sin 100 p

*t*

⇒ Which one is correct statement?

- Circuit is always open
- Network is always open
- Circuit is always closed
- Network is always closed

1, 2

2, 3

3, 4

1, 4

⇒ A tie set schedule shows

incidence of branches to nodes

incidence of branches to loops

incidence of nodes to loops

none of the above

⇒ Which of the following statements is

*incorrect*?

The line integral of B around the circuit is called magnetomotive force

Normal components of B are continuous but the normal components of H are not continuous

Magnetic flux lines are bent away from the normal in the medium with the highest value of permeability

The unit of permeability is henry/metre

⇒ India's first three-axis stabilised geostationary communication satellite is

Rohini

Aryabhatta

Apple

Bhaskara

⇒

Match the following:

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

A. | PMMC | 1. | Square law type scale |

B. | Moving iron | 2. | Very good response |

C. | Thermo-couple | 3. | Linear scale |

D. | Electrostatic | 4. | Voltmeter |

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

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

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

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

⇒ Consider the following statements regarding the properties of an R-L-C series circuit under resonance:

- Current in the circuit is in phase with applied voltage
- Voltage drop across capacitor C and inductance L are equal in magnitude.
- Voltage across the capacitor is equal in magnitude to the applied voltage.
- Current in the circuit is maximum.

1 only

1, 2 and 4

2 and 4

1, 3 and 4

⇒

**Assertion (A):** If an electron having charge *e* is revolving in an orbit of radius R and with angular velocity ω, the magnetic dipole moment of orbit is 0.5 *e*ωR^{2}.

**Reason (R):** Orbital angular momentum and magnetic dipole moment are always equal.

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

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

A is true but R is false

A is false but R is true

⇒

Match the following:

List I (Characteristics) | List II (Decrease) | ||
---|---|---|---|

A. | Paramagnetic | 1. | All dipoles are aligned is one preferred direction |

B. | Ferromagnetic | 2. | Half the dipoles are aligned in opposite direction and have equal magnitude |

C. | Antiferromagnetic | 3. | Half the dipoles (with equal magnitudes) are aligned in opposite direction to the other half having equal but lower magnitude |

D. | Ferrimagnetic | 4. | All dipoles have equal magnitude but are randomly oriented |

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

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

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

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

⇒ Consider the following statements:

- Internal sorting is used if the number of items to be sorted is very large.
- External sorting is used if the number of items to be sorted is vary large.
- External sorting needs auxiliary storage.
- Internal sorting needs auxiliary storage.

1 and 2

2 and 3

3 and 4

2 and 4