A station is known to operate at 60-meters. What is the frequency of the unknown station?

Description : If there is a reduction in the normally supplied frequency to a 120/240 volt, threephase AC current motor from 60 hertz to 55 hertz, the motor would _____________. A. run at a slower speed B. operate at a lower current C. overheat D. trip off the line

Last Answer : Answer: A

Before measuring an unknown resistance with an ohmmeter, you should _____________. A. adjust the meter's pointers to mid-scale B. change the meter's batteries C. center the meter's pointer at infinity D. short the test leads and calibrate the meter

Description : Before measuring an unknown resistance with an ohmmeter, you should _____________. A. adjust the meter's pointers to mid-scale B. change the meter's batteries C. center the meter's pointer at infinity D. short the test leads and calibrate the meter

Last Answer : Answer: D

Before measuring an unknown resistance with an ohmmeter, you should _____________. A. adjust the meter's pointer to mid-scale B. short the test leads and calibrate the meter reading to 'zero' C. change the meter's batteries D. center the meter's pointer at infinity

Description : Before measuring an unknown resistance with an ohmmeter, you should _____________. A. adjust the meter's pointer to mid-scale B. short the test leads and calibrate the meter reading to 'zero' C. change the meter's batteries D. center the meter's pointer at infinity

Last Answer : Answer: B

A resistance in a circuit of unknown value is to be tested using the voltmeter/ammeter method. Therefore, the meters should be connected with _____________. A. both meters in series with the resistance B. both meters in parallel with the resistance C. the ammeter in series and the voltmeter in parallel with the resistance D. the ammeter in parallel and the voltmeter in series with the resistance

Description : A resistance in a circuit of unknown value is to be tested using the voltmeter/ammeter method. Therefore, the meters should be connected with _____________. A. both meters in series with the ... parallel with the resistance D. the ammeter in parallel and the voltmeter in series with the resistance

Last Answer : Answer: C

When an unknown capacitance is tested with a bridge, what is the value of Cx if R1 equals 70 ohms, R2 equals 150 ohms, and Cs equals 550 microfarads?

Description : When an unknown capacitance is tested with a bridge, what is the value of Cx if R1 equals 70 ohms, R2 equals 150 ohms, and Cs equals 550 microfarads?

Last Answer : 256 microfarads.

What is the ripple frequency of a full-wave rectifier with an input frequency of 60 Hz?

Description : What is the ripple frequency of a full-wave rectifier with an input frequency of 60 Hz?

Last Answer : 120 hertz.

What is the ripple frequency of a full-wave rectifier with an input frequency of 60 Hz?

Description : What is the ripple frequency of a full-wave rectifier with an input frequency of 60 Hz?

Last Answer : 120 hertz.

What is the Ripple frequency of a half-wave rectifier if the input frequency is 60 Hz?

Description : What is the Ripple frequency of a half-wave rectifier if the input frequency is 60 Hz?

Last Answer : 60 hertz.

The frequency-response specification of your tape recorder reads within +/ - 3 dB from 150 Hz to 150 kHz at 60 ips. What does this mean?

Description : The frequency-response specification of your tape recorder reads within +/ - 3 dB from 150 Hz to 150 kHz at 60 ips. What does this mean?

Last Answer : The recorder can record all frequencies between 150 Hz and 150 kHz at 60 ips without varying the output amplitude more than 3 dB.

Coast Guard Regulations (46 CFR), require that an indicating light at the propulsion control station will operate if overloading or overheating occurs in a _______________. A. forced draft blower motor B. steering gear motor C. fuel pump motor D. condensate pump motor

Description : Coast Guard Regulations (46 CFR), require that an indicating light at the propulsion control station will operate if overloading or overheating occurs in a _______________. A. forced draft blower motor B. steering gear motor C. fuel pump motor D. condensate pump motor

Last Answer : Answer: B

Which of the following statements is incorrect? (a) Station batteries are used to operate relay only (b) The lightning arresters are basically surge diverters (c) An impedance relay has maximum fault current when fault occurs near the relay (d) A high speed relay has an operation of 1 to 2 cycles

Description : Which of the following statements is incorrect? (a) Station batteries are used to operate relay only (b) The lightning arresters are basically surge diverters (c) An impedance relay has maximum fault current when fault occurs near the relay (d) A high speed relay has an operation of 1 to 2 cycles

Last Answer : (a) Station batteries are used to operate relay only

A man in a train notices that he can count 21 telephone posts in one minute. If they are known to be 50 meters apart, then at what speed is the train travelling? A.50 kmph B.54 kmph C.60 kmph D.62 kmph E.None of these

Description : A man in a train notices that he can count 21 telephone posts in one minute. If they are known to be 50 meters apart, then at what speed is the train travelling? A.50 kmph B.54 kmph C.60 kmph D.62 kmph E.None of these

Last Answer : Answer – C (60 kmph) Explanation – Number of gaps between 21 telephone posts = 20 Distance traveled in 1 minute = (50 x 20) m = 1000 m = 1 km Speed = 60 km/hr

If the fuse shown on the schematic (figure 3-10) opens, what lights will operate?

Description : If the fuse shown on the schematic (figure 3-10) opens, what lights will operate?

Last Answer : Only the brake lights.

If the ignition switch is placed in the ON position and all the engine instruments operate properly except the gas gauge, where would the fault probably be?

Description : If the ignition switch is placed in the ON position and all the engine instruments operate properly except the gas gauge, where would the fault probably be?

Last Answer : Between point (3) and the gas gauge tank unit ground.

Is it possible for a transmission line to operate improperly at certain frequencies and properly at others?

Description : Is it possible for a transmission line to operate improperly at certain frequencies and properly at others?

Last Answer : Yes, it is quite common.

Which type of optical source tends to operate at higher drive currents to produce light?

Description : Which type of optical source tends to operate at higher drive currents to produce light?

Last Answer : Laser.

Why can multimode graded-index fiber 1300-nm systems using LEDs operate over longer distances and at higher bandwidths than 850-nm systems?

Description : Why can multimode graded-index fiber 1300-nm systems using LEDs operate over longer distances and at higher bandwidths than 850-nm systems?

Last Answer : Longer distances and higher bandwidths are possible because fiber material losses and dispersion are significantly reduced at the 1300-nm region.

What is the temperature range within which a disk will operate?What is the temperature range within which a disk will operate?

Description : What is the temperature range within which a disk will operate?

Last Answer : 10 to 50 degrees Celsius or 50 to 120 degrees Fahrenheit.

A two-cavity klystron without a feedback path will operate as what type of circuit?

Description : A two-cavity klystron without a feedback path will operate as what type of circuit?

Last Answer : Amplifier.

Vacuum tubes are designed to operate in what portion of the Ep - Ip

Description : Vacuum tubes are designed to operate in what portion of the Ep - Ip

Last Answer : The linear portion.

Most Navy tty sets operate at what speeds?

Description : Most Navy tty sets operate at what speeds?

Last Answer : 60, 75, or 100 wpm.

Suggest instrument to measure unknown frequency above 5 MHz and store result. Justify it.

Description : Suggest instrument to measure unknown frequency above 5 MHz and store result. Justify it.

Last Answer : For measurement of frequency CRO, DSO SPECTRUM ANALYZER & FREQUENCY COUNTER can be used. In above specification we can used CRO & DSO for measurement, but the data has to be stored so we ... width or higher bandwidth can be used. Because DSO has measurement facility as well as storage facility.

In reference to dB meters, 0 dBm represents 1 milliwatt into what value of load?

Description : In reference to dB meters, 0 dBm represents 1 milliwatt into what value of load?

Last Answer : 600-ohm load.

What do impedance-angle meters and vector bridges have in common?

Description : What do impedance-angle meters and vector bridges have in common?

Last Answer : Both measure phase angle and magnitude in determining impedance.

What is the advantage of using in-line wattmeters over output power meters?

Description : What is the advantage of using in-line wattmeters over output power meters?

Last Answer : Most in-line wattmeters are capable of measuring both forward and reflected power.

Why is a multimeter preferred over separate meters?

Description : Why is a multimeter preferred over separate meters?

Last Answer : It is much more convenient to have one meter with several functions than several meters each with a single function.

Why is in-circuit meters used?

Description : Why is in-circuit meters used?

Last Answer : In-circuit meters are used to monitor the operation of electrical or electronic devices.

What two types of meters can be used to check a switch?

Description : What two types of meters can be used to check a switch?

Last Answer : An ohmmeter and a voltmeter.

A four-pole induction motor, operating on three-phase 60 cycle current will operate at approximately ___________. A. 850 RPM B. 1,150 RPM C. 1,750 RPM D. 3,550 RPM

Description : A four-pole induction motor, operating on three-phase 60 cycle current will operate at approximately ___________. A. 850 RPM B. 1,150 RPM C. 1,750 RPM D. 3,550 RPM

Last Answer : Answer: C

Trommels are revolving screens which normally operate in the range of __________ rpm. (A) 1 - 2 (B) 15 - 20 (C) 40 - 50 (D) 60 - 75

Description : Trommels are revolving screens which normally operate in the range of __________ rpm. (A) 1 - 2 (B) 15 - 20 (C) 40 - 50 (D) 60 - 75

Last Answer : (B) 15 - 20

The hp required to operate subsoil plough a) 10-20hp b) 20-30hp c) 60-100hp d) 140-200hp

Description : The hp required to operate subsoil plough a) 10-20hp b) 20-30hp c) 60-100hp d) 140-200hp

Last Answer : 60-100hp

It is known that WWV operates on a frequency of 10 megahertz. What is the wavelength of WWV?

Description : It is known that WWV operates on a frequency of 10 megahertz. What is the wavelength of WWV?

Last Answer : 30 meters.

Stereoscopic-zoom microscopes and precision drill presses are normally associated with what type of repair station?

Description : Stereoscopic-zoom microscopes and precision drill presses are normally associated with what type of repair station?

Last Answer : Microminiature repair station.

Which of the listed motors will operate at the highest RPM, assuming that each operates at the same frequency? A. A four-pole synchronous motor under normal load. B. A four-pole induction motor under no load. C. A six-pole synchronous motor under normal load. D. A six-pole induction motor under full load.

Description : Which of the listed motors will operate at the highest RPM, assuming that each operates at the same frequency? A. A four-pole synchronous motor under normal load. B. A four-pole induction motor under ... A six-pole synchronous motor under normal load. D. A six-pole induction motor under full load.

Last Answer : Answer: A

What is antenna bandwidth? A. Antenna length divided by the number of elements B. The angle between the half-power radiation points C. The angle formed between two imaginary lines drawn through D. The frequency range over which an antenna can be expected to operate satisfactorily

Description : What is antenna bandwidth? A. Antenna length divided by the number of elements B. The angle between the half-power radiation points C. The angle formed between two imaginary lines drawn through D. The frequency range over which an antenna can be expected to operate satisfactorily

Last Answer : D. The frequency range over which an antenna can be expected to operate satisfactorily

Most satellites operate in which frequency band? A. 30 to 300 MHz B. 300 MHz to 3 GHz C. 3 GHz to 30 GHz D. Above 300 GHz

Description : Most satellites operate in which frequency band? A. 30 to 300 MHz B. 300 MHz to 3 GHz C. 3 GHz to 30 GHz D. Above 300 GHz

Last Answer : C. 3 GHz to 30 GHz

To reverse the direction of rotation of a three-phase AC induction motor, do one of the following: w) reverse any two of the three-phase connections x) change the frequency of the applied AC power y) operate the motor below the stall torque at very high slip z) none of the above

Description : To reverse the direction of rotation of a three-phase AC induction motor, do one of the following: w) reverse any two of the three-phase connections x) change the frequency of the applied AC power y) operate the motor below the stall torque at very high slip z) none of the above

Last Answer : ANSWER: W -- REVERSE ANY TWO OF THE THREE-PHASE CONNECTIONS

Can MOSFET operate at very high frequency?

Last Answer : Yes MOSFET can operate at very high frequency.

An automobile is travelling at 25 m/s. It takes 0.3 second to apply the brakes after which the deceleration is 6 m/s2. How far, in meters, does the automobile travel before it stops? a.45 b.107 dynes c.40 d.50 e.60

Description : An automobile is travelling at 25 m/s. It takes 0.3 second to apply the brakes after which the deceleration is 6 m/s2. How far, in meters, does the automobile travel before it stops? a.45 b.107 dynes c.40 d.50 e.60

Last Answer : e. 60

Which has a greater speed, a heron that travels 60 meters in 60 seconds or a duck that travels 60 meters in 5 seconds. Explain?

Description : Which has a greater speed, a heron that travels 60 meters in 60 seconds or a duck that travels 60 meters in 5 seconds. Explain?

Last Answer : The heron is traveling 1 meter per second. The duck is traveling 12 meters per second. The duck is traveling faster.

What is the spring constant when it is stretched 1.5 meters when a force of 60 N is applied to it?

Description : What is the spring constant when it is stretched 1.5 meters when a force of 60 N is applied to it?

Last Answer : Just divide the force by the amount of stretch.

What is the electrical wavelength of a 500 MHz signal? A. 60 centimeters B. 6 meters C. 0.06 meter D. 60 meters

Description : What is the electrical wavelength of a 500 MHz signal? A. 60 centimeters B. 6 meters C. 0.06 meter D. 60 meters

Last Answer : A. 60 centimeters

What is the wavelength of a signal at 500 MHz? A. 0.062 cm B. 6 meters C. 60 cm D. 60 meters

Description : What is the wavelength of a signal at 500 MHz? A. 0.062 cm B. 6 meters C. 60 cm D. 60 meters

Last Answer : C. 60 cm

The usual spans with R.C.C. poles are (a) 40—50 meters (b) 60—100 meters (c) 80—100 meters (d) 300—500 meters

Description : The usual spans with R.C.C. poles are (a) 40—50 meters (b) 60—100 meters (c) 80—100 meters (d) 300—500 meters

Last Answer : (c) 80—100 meters

A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train? a) 120 meters b) 180 meters c) 324 meters d) 150 meters

Description : A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train? a) 120 meters b) 180 meters c) 324 meters d) 150 meters

Last Answer : d) 150 meters

anonymous · Answer 1 · 2021-08-20T16:16:40+0000

Answer :

5 megahertz.

answered Aug 20, 2021 by anonymous

A station is known to operate at 60-meters. What is the frequency of the unknown station?

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