What is the local oscillator (mixer) frequency of the satellite with an uplink frequency in GHz band?

In the last month the company decided to increase the cost of its mixer by 10 percent. What is the present price of the mixer? I. The cost of mixer and juicer together was Rs 2850 a month ago. II. The amount of 10% increase on the mixer comes to Rs 220.

A

If the data in statement I alone are sufficient to answer the question

B

If the data in statement II alone are sufficient answer the question

C

If the data either in I or II alone are sufficient to answer the question;

D

If the data even in both the statements together are not sufficient to answer the question

The intrinsic impedance of a TE wave having a cut off frequency of 6 GHz at a frequency of 7.5 GHz in air is

A

628.33

B

338.62

C

498.76

D

342.24

If the earth station downlink signal received is at fs = 4.08 GHz, what first stage local-oscillator frequency fLO is needed to achieve IF of 770 MHz?

A

3310 MHz

B

4080 MHz

C

1203 MHz

D

3250 MHz

The IS-54 digital cellular telephone system uses a receive frequency band of 869-894 MHz, with a first IF frequency range of 87 MHz, one possible range of local oscillator frequency is:

A

956 to 981 MHz

B

750 to 784 MHz

C

869 to 894 MHz

D

None of the mentioned

When constructing variable frequency oscillator among clapp oscillator and colpitts oscillator which one is preferred?

A

Colpitts oscillator

B

Clapp oscillator

C

Both of them have equal preference

D

None of them preffered

Determine the resistance value and tolerance of a resistor that has the following color bands; first band is red, second band is red, third band is orange, and the fourth band is gold

A

220 Ohm, 5%

B

220 Ohm, 10%

C

22,000 Ohm, 5%

D

22, 000 Ohm, 10%

E

None of the above

Is the following statement true? Statement: On the basis of band theory of solids the semi-conductors have a completely filled valence band, a partially filled conduction band and a narrow forbidden band.

A

Statement is false

B

Statement is true

Give the correct sequence of preparing a puff sleeve with band and its attachment to the garment.
1. Gathering of cap line.
2. Stitching underarm seam of sleeve.
3. Finishing of band.
4. Flattering of band.
5. Gathering of lower underarm of sleeve.
6. Attaching the band.
7. Attaching sleeve in the armhole.

A

5, 6, 4, 2, 3, 1, 7

B

5, 1, 7, 6, 2, 3, 4

C

6, 2, 3, 4, 5, 1, 7

D

1, 2, 3, 4, 6, 7, 5

It is desired to design a frequency oscillator at 2.4 GHz and the reflection coefficient desired is 0.6, then the coupling coefficient between the feed line and the dielectric resonator is:

A

1.5

B

1

C

0.5

D

none of the mentioned

The improvement of Colpitts oscillator over Hately oscillator is, Colpitts oscillator’s performance in ___________

A

All frequency region

B

Mid frequency region

C

High frequency region

D

Low frequency region

What is the local oscillator (mixer) frequency of the satellite with an uplink frequency in GHz band?

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