List two ways in which the torque in a given DC motor can be changed.

What will be an ideal response?


Vary the applied voltage.
Change the field or armature current by using a variable resistor.

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The soil layer most seeds germinate in is the _____ horizon

A) A B) C C) R D) O

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Dangers in the agriscience laboratory are often subtle and may not be apparent when you begin

Indicate whether the statement is true or false

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The caliper dust boot may need to be pried out with a(an) ________

A) Special tool B) Air chisel C) Screwdriver D) C-clamp

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What is the impedance of a single-phase inductive circuit having a voltage of 240 V and a current flow of 10 A?

A) 240 V/10 A = 24 ? impedance B) 240 V × 10 A = 2,400 ? impedance C) 10 A/240 V = 0.042 ? impedance D) Impedance cannot be calculated using only volts and amps.

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