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Consider the following statements related to oscillator circuits : 1. The tank circuit of a Hartley oscillator is made up of a tapped capacitor and a common inductor. 2. The tank circuit of a Colpitts oscillator is made up of a tapped capacitor and a common oscillator. 3. The Wien Bridge oscillator is essentially a two-stage amplifier with an RC bridge in the first stage, and, the second stage serving as an inverter. 4. Crystal oscillators are fixed frequency oscillators with a high Q-factor.  Which of the following are true?
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.
In an AM system receiver. the mixer translates the carrier frequency fc to a fixed intermediate frequency of 450 kHz. Given a broadcast signal of frequency 900 kHz. What is the corresponding image frequency when a superhetrodyne receiver is employed with local oscillator frequency greater than the broadcast signal frequency?
On 17th December 2020, India recently launched the CMS-01 communication satellite into the geostationary Transfer Orbit. What statements is/are CORRECT regarding the satellite? 1. The satellite was launched on a PSLV-C50 launch vehicle. 2. The satellite will provide telecom services in the extended C-Band of the frequency spectrum. 3. Is India's 40th communication satellite that will replace the functions of GSAT-12 launched in 2013. Select the correct answer using the code given below. (a) 1 only (b) 2 only (c) 3 only (d) Both 1 and 2
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
This are the following statements given regarding satellite’s motion a. A satellite in geostationary orbit lies in the same plane with equator b. A satellite in geosynchronous orbit lies in the same plane with equator c. A satellite in geostationary orbit does not lie in the same plane with equator, it is inclined at some angle from plane of equator d. A satellite in geosynchronous orbit does not lie in the same plane with equator, it is inclined at some angle from plane of equator Choose one of the following options
What is METSAT, the first exclusive weather satellite created by ISRO? A. Geosynchronous Satellite B. The Earth's lower orbit satellite C. Polar Orbit Satellite D. Deep Space Probe Satellite
Match the following pairs: Launch Vehicle Satellite  i. Satellite Launch Vehicle -  3 (SLV - 3)  A. Chandrayaan - I  ii. Augmented Satellite   Launch Vehicle (ASLV)  B. Rohini  iii. Polar Satellite Launch   Vehicle (PSLV)  C. SROSS - C  iv. Geosynchronous   Satellite Launch Vehicle   (GSLV)  D. EDUSAT Which of the following codes are correctly matched?
Which of the following statements are correct? 1. A lowpass filter passes low frequencies and stops high frequencies. 2. A highpass filter passes high frequencies and rejects low frequencies 3. A bandpass filter passes frequencies within a frequency band and attenuates frequencies outside the band. 4. A bandstop filter passes frequencies within the band and blocks/attenuates frequencies outside a frequency band.
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?