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. | A circular waveguide carries TE_{11} mode whose radial electric-field is given |

A. | 10 cm [Wrong Answer] |

B. | 3p cm [Wrong Answer] |

C. | 2p cm [Correct Answer] |

D. | 8 cm [Wrong Answer] |

View Answer
Explanation:-
Answer : CDiscuss 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 :**

⇒ For a second order system delay time

*t*is the time required to reach

_{d}half the final value for the very first time

the final value for the very first time

90% of the final value for the very first time

none of the above

⇒ An induction wattmeter can be used for

dc only

50 Hz ac only

both ac and dc

high frequency ac only

⇒ A two branch parallel tuned circuit has a coil of resistance 100 Ω and inductance 0.005 H in one branch and 10

*n*F capacitor in the second branch. At resonance frequency is

100 rad/sec

10000 rad/sec

1000 rad/sec

more than 10000 rad/sec

⇒ For the collector-feedback amplifier shown below the voltage gain A

_{v}will be _________

-113.07

-103.07

-107.07

-93

⇒ Hall effect is observed in a specimen when it is carrying current and is placed in a magnetic field. The resulting electric field inside the speciment will be in

direction normal to both current and magnetic field

the direction of current

direction antiparallel to magnetic field

an arbitrary direction depend upon conductivity

⇒ A series circuit has R = 5 Ω and C = 10 μF. At

*t*= 0 it is switched on to a 10 V dc battery. The maximum current in the circuit is

0.0833333333333333

0.0416666666666667

10

^{6}A

10 μA

⇒

**Assertion (A):** The line integral of B about a closed contour, in a region containing steady current, is μ_{0} times the total net current, following through the contour of integration.

**Reason (R):** The curl of B is equal to μ_{0} times the current density vector J

Both (A) and (R) are true and (R) is the correct explanation of (A)

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

(A) is true but (R) is false

(A) is false but (R) is true

⇒ The electric field of an EM wave propagating in the

*z*direction given

linearly polarized in z direction

elliptically polarized

left hand circularly polarized

right hand circularly polarized

⇒ In the balanced bridge shown in figure.

*X*should

a self inductance having resistance

a capacitance

a non-inductive resistance

an inductance and capacitance in parallel

⇒ The cut in voltage

is the same for silicon and germanium diodes

is a forward voltage

is a reverse voltage

is a forward voltage below which the current is very small

⇒ The output

*Y*of the circuit shown in the figur

(A + B) C + DE

AB + C(D + E)

(A + B) C + D + E

(AB + C) . DE

⇒ In the circuit of fi

V

_{a}would always lag V

_{b}

V

_{a}would always lead V

_{b}

V

_{a}and V

_{b}can be in phase

phase angle between V

_{a}and V

_{b}would always be 90°

⇒

**Assertion (A):** For a physically realisable driving point function, the degree of numerator and denominator should be equal.

**Reason (R):** The sum of positive real functions is real.

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

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

A is true but R is false

A is false but R is true

⇒ Permeability is analogous to

resistivity

retentivity

conductivity

coercivity

⇒ Consider the following symbols

- Letters A to Z and a to z
- Digits 0 to 9
- Logical operators and, or, not
- Parenthesis ( )

1 and 2 only

1, 2 and 3 only

1, 2 and 4 only

All

⇒ 25 persons are in a room. 15 of them play hockey, 17 of them play football and 10 of them play both hockey and football. Then the number of persons playing neither hockey nor football is:

2

17

13

3

⇒ The most important primary force of attraction in the formation of solids is

electromagnetic

electrostatic

quantum-electrostatic

quantum electromagnetic

⇒

Match the following:

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

A. | T (Reflection coefficient) = 0 | 1. | (Z_{L} - Z_{o})/(Z_{L} + Z_{o}) |

B. | T = - 1 | 2. | Z_{L} = Z_{o} |

C. | T = + 1 | 3. | Z_{L} = 0 |

D. | - 1 < T < + 1 | 4. | Z_{L} = ∞ |

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

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

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

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

⇒

Match the following:

List I (Camera pick up tubes) | List II (Developed by) | ||
---|---|---|---|

A. | CCD charger | 1. | Toshiba |

B. | New vicon | 2. | Philips |

C. | Plumbicon | 3. | Matushita |

D. | Chalnicon | 4. | RCA |

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

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

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

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

⇒ The first contribution to logic was made by

George Boole

Copernicus

Aristotle

Shannon

⇒ If A = B = 1, the outputs P and Q in the given figure

P = Q = 0

P = 0, Q = 1

P = 1, Q = 0

P = Q = 1

⇒ Generally op amp is used in

open loop

closed loop

cascaded loop

either (a) or (c)

⇒ In orthogonal BFSK, the energy of information bearing term is

the same as total transmitted energy

one-half of total transmitted energy

one-fourth of total transmitted energy

none of the above

⇒ A dynamometer wattmeter is connected in ac circuit. The measured power is

rms power

average power

peak power

instantaneous power

⇒ Geosynchronous communication satellites travel around the earth in circular orbits with a forward speed of about __________ km/h.

11200

0

36000

22800

⇒ Calculate the O/P voltage of a non-inverting constant gain multiplier with R

_{1}= 100 kΩ, R

_{f}= 600 kΩ, V

_{1}= 2 volt, then O/P voltage V

_{o}of non inverting op-amp is given by

16 V

14 V

20 V

15 V

⇒ An instruction using immediate addressing mode in 8085 is

2 bytes long

3 bytes long

2 or 3 bytes long

1 or 2 or 3 bytes long

⇒ Which of the following is Doppler effect not used?

CW radar

FM radar

MTI system

Moving target plotting on PPI

⇒ Consider the real expression in Pascal language

`XZ and MP + K`

`XZ + Y and MP + K`

`(MP + K + X) / Y `

`Y / (MP + K)`

⇒ In the transformer shown in figure, the inductance measured across terminal 1 and 2 was 4 H with terminals 3 and 4 open. It was 3H when terminals 3 and 4 are short circuited. The coefficient of couplin

1

0.707

0.5

indeterminate due to insufficient data