Electronic Devices and Communication MCQ with Answers

151) A standard AM broadcast station is allowed to transmit modulating frequencies up to 5 kHz. If the AM station is transmitting on a frequency of 980 kHz, maximum and minimum upper and lower sidebands are

Answer is:

985 kHz, 975 kHz

Explanation:

A standard AM broadcast station is allowed to transmit modulating frequencies up to 5 kHz. If the AM station is transmitting on a frequency of 980 kHz, maximum and minimum upper and lower sidebands are 985 kHz, 975 kHz

152) A standard AM broadcast station is allowed to transmit modulating frequencies up to 5 kHz. If the AM station is transmitting on a frequency of 980 kHz, total bandwidth occupied by the AM station is

Answer is:

10 kHz

Explanation:

P_t= P_c( 1 + m²/2)

153) A formula for computing the total power in an AM signal when the carrier power and the modulation index are known is P_T = P_c?(1+m²/2)?. If the carrier of an AM transmitter is 1000 W and it is modulated 100 percent the total AM power is

Answer is:

1500 W

Explanation:

P_t= P_c?( 1 + m²/2)

154) A formula for computing the total power in an AM signal when the carrier power and the modulation index are known is? P_T = P_c?(1+m²/2). if the carrier of an AM transmitter has a power = 30 W and it is modulated 85 percent the total AM power is

Answer is:

40.8 W

Explanation:

P_t= P_c?( 1 + m²/2)

155) A formula for computing the total power in an AM signal when the carrier power and the modulation index are known is?P_T = P_c?(1+m²/2). If the carrier of an AM transmitter has a power = 30 W and it is modulated 85 percent the power in one sideband is

Answer is:

5.4 W

Explanation:

P_t= P_c?( 1 + m²/2)

151) A standard AM broadcast station is allowed to transmit modulating frequencies up to 5 kHz. If the AM station is transmitting on a frequency of 980 kHz, maximum and minimum upper and lower sidebands are

985 kHz, 975 kHz

152) A standard AM broadcast station is allowed to transmit modulating frequencies up to 5 kHz. If the AM station is transmitting on a frequency of 980 kHz, total bandwidth occupied by the AM station is

10 kHz

153) A formula for computing the total power in an AM signal when the carrier power and the modulation index are known is PT = Pc?(1+m2/2)?. If the carrier of an AM transmitter is 1000 W and it is modulated 100 percent the total AM power is

1500 W

154) A formula for computing the total power in an AM signal when the carrier power and the modulation index are known is? PT = Pc?(1+m2/2). if the carrier of an AM transmitter has a power = 30 W and it is modulated 85 percent the total AM power is

40.8 W

155) A formula for computing the total power in an AM signal when the carrier power and the modulation index are known is?PT = Pc?(1+m2/2). If the carrier of an AM transmitter has a power = 30 W and it is modulated 85 percent the power in one sideband is

5.4 W

153) A formula for computing the total power in an AM signal when the carrier power and the modulation index are known is P_T = P_c?(1+m²/2)?. If the carrier of an AM transmitter is 1000 W and it is modulated 100 percent the total AM power is

154) A formula for computing the total power in an AM signal when the carrier power and the modulation index are known is? P_T = P_c?(1+m²/2). if the carrier of an AM transmitter has a power = 30 W and it is modulated 85 percent the total AM power is

155) A formula for computing the total power in an AM signal when the carrier power and the modulation index are known is?P_T = P_c?(1+m²/2). If the carrier of an AM transmitter has a power = 30 W and it is modulated 85 percent the power in one sideband is