Related Questions

Why does the ionosphere of the Earth's atmosphere facilitate radio communication? i. The presence of ozone causes the reflection of radio waves to earth ii. Radio waves have a very long wavelength
A i only
B ii only
C both i & ii
D neither i nor ii
In radio transmission, the medium of transmission is ___________
A Space
B An antenna
C Cable
D None of the above
Which of the following frequency ranges is used for AM radio transmission?
A Very Low Frequency : 3 kHz to 30 kHz
B Medium Frequency : 300 kHz to 3 MHz
C High Frequency : 3 MHz to 30 MHz
D Very High Frequency : 30 MHz to 300 MHz
E None of the above
কোনো খেলার সরাসরি সম্প্রচারের ডেটা ট্রান্সমিট হবার প্রক্রিয়া- (i) Broadcast Transmission (ii) Duplex Transmission (iii) Simplex Mode Transmission নিচের কোনটি সঠিক?
A i ও ii
B i ও iii
C ii ও iii
D i ii ও iii
capacitors are used for audio frequency and radio frequency coupling and tuning.
A Air
B Mica
C Plastic film
D Ceramic
To measure radio frequency, the suitable frequency meter is
A Weston frequency meter
B reed vibrator frequency meter
C heterodoxy frequency meter
D electrical resonance frequency meter
What frequency range is used for TV transmission and low power microwave applications?
A Very Low Frequency : 3 kHz to 30 kHz
B Medium Frequency : 300 kHz to 3 MHz
C Ultra High Frequency : 300 MHz to 3000 MHz
D Super High Frequency : 3000 MHz to 30000 MHz
E None of the above
A retailer buys a radio from the wholesaler for TK.80. He then marks up the price by 25% and sales at a discount of 10% . What is his profit on the radio ?
A TK. 5
B TK. 10
C TK. 15
D TK.12
A retailer buys a radio from the wholesaler for $ 75.00. He then marks up the price by 1/3 and sells it at a discount of 20% what wa his profit on the radio ?
A $ 5.00
B $ 6.67
C $ 7.50
D $ 13.33
A retailer buys a radio from the wholesaler for $ 80.00 He then marks up the price by 1/2 and sells it at a discount of 20% What was his profit on the radio?
A $ 20.00
B $16.00
C $ 18.50
D $ 12.67

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