The type of counter where each flip-flop provides the CLK input to the next flip-flop is referred to as a ________ counter
A) Parallel B) Ripple C) Quadratic D) Synchronous
B
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The most desirable method of exiting cable from a cable tray is _____.
a. between rungs or from the end of the tray using a dropout plate b. over the side c. from the end of the tray without a dropout plate d. between rungs without a dropout plate
In response to the Boxer Rebellion, the United States
A. refused to accept any indemnity for the losses that it incurred while putting down this uprising. B. withdrew all American missionaries to China and renounced any economic interest in China. C. sent money but no troops to help a multinational contingent to crush the uprising. D. became an East Asian power. E. abandoned its general principles of non-entanglement and noninvolvement in overseas conflict.
A dc, separately excited motor drives a conveyor belt (constant torque). The terminal voltage of the motor is 120 V. When the conveyor belt is fully loaded, the armature current of the motor is 15 A and the speed of the motor is 180 rpm. The armature resistance of the motor is 2 ?.
a. Calculate the steady-state speed of the motor if the field voltage is reversed. b. Calculate the motor speed if after the field voltage is reversed, the field voltage is reduced by 10%. c. Sketch the speed-torque characteristics and show all operating points. Hint: Assume that the field MMF is linearly proportional to the field voltage.
Old brake shoes are often returned to the manufacturer when new friction material is installed. These old shoes are usually called the ________
A) Rim B) Web C) Nib D) Core