Users Also Read

MCQ's Search Engine

Electrical Engineering

Mechanical Engineering

Civil Engineering

Automobile Engineering

Chemical Engineering

Computer Engineering

Electronics Engineering

Medical Science Engg

Q1. | If φ_{sh} is flux of shunt magnet, φ_{se} is flux of series magnet, i_{sh} is eddy current due to φ_{se}, the torque in an induction wattmeter is proportional to |

A. | φ_{se} i_{se} + φ_{sh} i_{sh} [Wrong Answer] |

B. | φ_{sh} i_{se} - φ_{se} i_{sh} [Correct Answer] |

C. | φ_{sh} i_{sh} - φ_{se} i_{se} [Wrong Answer] |

D. | φ_{sh} i_{sh} + φ_{se} i_{se} [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss 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 :**

⇒ When a dc chopper feeds an RLE load, the load current, during steady state operation

remains constant

varies between maximum and minimum values

may remain constant or vary

is constant if R is constant

⇒ When a capacitor is connected to the terminals of an ohmmeter, the pointer indicated a low resistance initially and finally come to infinity position. This shows that capacitor is

short circuited

all right

faulty

open circuited

⇒ Top loading in an antenna increases

effective height

beam width

input capacitance

bandwidth

⇒

Match the following:

List I (Library function in Pascal) | List II (Type of argument) | ||
---|---|---|---|

A. | ROUND X | 1. | X in radians |

B. | ABS X | 2. | X real |

C. | SQR X | 3. | X real or integer |

D. | SIN X |

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

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

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

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

⇒ The V

_{TH}at terminals A and B is equa

0 V

5 V

-5 V

none

⇒ (s

*I*- A)

^{-1}is equal to

*adj*(

*sI*- A)/

*det*(

*sI*- A)

*det*(

*sI*- A)/

*adj*(

*sI*- A )

[

*adj*(

*sI*- A)] [

*det*(

*sI*- A)]

none of the above

⇒ The dynamic resistance of a forward biased

*p*-

*n*diode

varies inversely with current

varies directly with current

is constant

is either constant or varies directly with current

⇒ In a bridge rectifier circuit the rms value of input ac voltage is 10 V. The PIV across each diode is

7.07 V

14.14 V

10 V

28.28 V

⇒ In VHS format width of audio track is

5 mm

2 mm

1 mm

0.1 mm

⇒ In a tuned class C power amplifier the quiescent value of collector to emitter voltage is equal to (V

_{CC}denotes collector battery voltage)

V

_{CC}

0.5 V

_{CC}

0.25 V

_{CC}

either (b) or (c)

⇒ A Hartley oscillator uses

a tapped capacitor

a tapped inductor

a tapped inductor for inductive feedback

none of the above

⇒ A current increasing at the rate of 1A/s is passed through a 1 H inductor. At

*t*= 0,

*i*= 0. The flux linkages after 1 sec are

0.5 Wb-turn

1 Wb-turn

2 Wb-turn

4 Wb-turn

⇒ The initial state of a Mod-16 counter is 0110. After 37 clock pulses the state of counter will be

1011

110

10

1

⇒

Match the following:

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

A. | Voltage controlled device | 1. | BJT |

B. | Current controlled device | 2. | UJT |

C. | Conductivity modulation device | 3. | FET |

D. | Negative conductance device | 4. | Impatt diode |

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

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

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

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

⇒ The dc load current in a bridge rectifier circuit is 10 mA. The dc load current through each diode is

40 mA

20 mA

10 mA

5 mA

⇒ For the circuit shown in the figure, the current

indeterminate due to indeterminate data

zero

4 Amp

8 Amp

⇒ Which family of logic circuits uses field effect transistors?

TTL

CMOS

Both LED and well as LCD

None of the above

⇒ To convert JK flip flop to D flip flop

connect D to both J and K

connect D to J directly and D to K through inverter

connect D to K directly and D to J through inverter

connect D to K and leave J open

⇒ A low-pass filter frequency responce H (

*j*ω) = A (ω)

*e*

^{jΦ}(ω) does not produce any phase distortion, if

A(ω) = Cω

^{2}, Φ (ω) =

*k*ω

^{3}

A(ω) = Cω

^{2}, Φ (ω) =

*k*ω

A(ω) = Cω

^{2}, Φ (ω) =

*k*ω

^{2}

A(ω) = C, Φ (ω) =

*k*ω

^{-1}

⇒ An

*m*derived low pass filter has

*f*

_{c}= 1000 Hz,

*f*

_{∞}= 1250 Hz and

*m*= 0.6. If

*m*is increased, then

both

*f*

_{c}and

*f*

_{∞}will increase

both

*f*

_{c}and

*f*

_{∞}will decrease

*f*

_{c}will remain constant but

*f*

_{∞}will decrease

*f*

_{c}will remain constant but

*f*

_{∞}will increase

⇒ An induction wattmeter can be used for ac only.

TRUE

FALSE

⇒ For the transmission of normal speech, the PCM channel needs a bandwidth of __________ kHz.

2

4

16

32

⇒ As regards ∈

_{0}and ∈

_{r}(absolute and relative permittivity)

both ∈

_{0}and ∈

_{r}can be interpreted in terms of atomic properties of medium

only ∈

_{r}can be interpreted in terms of atomic properties of medium

only ∈

_{0}can be interpreted in terms of atomic properties

∈

_{r}has no physical significance

⇒ Pilot-carrier transmission is one in which

only one sideband is transmitted

one sideband and carrier are transmitted

only two sidebands are transmitted

two sidebands as well as a trace of carrier are transmitted

⇒ The number of variables in a function is odd and the number of minterms with even number of 0's are same as the number of minterms with odd number at 1 's, the expression formed can be represented in __________ as well as __________ form.

exclusive - OR, NOR

equivalence, exclusive - OR

AND, coincidence

OR, exclusive - OR

⇒ A multilevel decoder is more costly as compared to single level decoder.

TRUE

FALSE

⇒ A moving coil instrument has a resistance of 0.6 Ω and full scale deflection at 0.1 A. To convert it into an ammeter of 0-15 A range, the resistance of shunt should be

0.6 Ω

0.06 Ω

0.1 Ω

0.004 Ω

⇒ Which of the following pulse-time modulation is least used?

PDM

PPM

PWM

PAM

⇒ Maximum power transfer theorem finds application in

power circuits

distribution circuits

communication circuits

both power and communication circuits

⇒ MOS circuits as compared to bipolar circuits take

more chip area

less chip area

same chip area

none of these