Related Questions

A contractor employed 30 men to do a piece of work in 38 days. After 25 days , he employed 5 men more and the work was finished one day earlier. How many days he would have been behind, if he had not employed additional men?
A 1
B 114
C 134
D 112
To produce an old photograph, a photographer charges x dollars to make a negative, 3x/5 dollars for each of the first 10 prints, and x/5 dollars for each print in excess of 10 prints. If 45 dollars is the total charge to make a negative and 20 prints from an old photograph, how many dollars the photographer charges to make a negative?
A 3
B 3.5
C 4
D 4.5
To produce an old photograph, a photographer charges x dollars to make a negative 3x/5 dollars for each of the first 10 prints, and x/5 dollars for each print in excess of 10 prints. If 45 dollars is the total charge to make a negative and 20 prints from an old photograph, how many dollars the photographer charges to make a negative?
A 3
B 3.5
C 4
D 4.5
When negative voltage feedback is applied to an amplifier, its voltage gain ___________
A Is increased
B Is reduced
C Remains the same
D None of the above
Negative feedback ___________
A increases the input and output impedances
B increases the input impedance and bandwidth
C decreases the output impedance and bandwidth
D does not affect impedance or bandwidth
When voltage feedback (negative) is applied to an amplifier, its input impedance ___________
A Is decreased
B Is increased
C Remains the same
D None of the above
When current feedback (negative) is applied to an amplifier, its input impedance ___________
A Is decreased
B Is increased
C Remains the same
D None of the above
If voltage feedback (negative) is applied to an amplifier, its output impedance ___________
A Remains the same
B Is increased
C Is decreased
D None of the above
The value of negative feedback fraction is always ___________
A Less than 1
B More than 1
C Equal to 1
D None of the above
Regenerative feedback implies feedback with
A Oscillations
B Step input
C Negative sign
D Positive sign

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