The technician team leader is generally competent only in general maintenance tasks
A) True B) False
B
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In an information system, a filing cabinet can be considered a storage device just as a
computer disk is.
Indicate whether the statement is true or false.A 600 V, dc shunt motor has armature and field resistances of l.5 ? and 600 ?, respectively. When the motor runs unloaded, the line current is 3 A, and the speed is 1000 rpm.
a. Calculate motor speed when the load draws an armature current of 30 A. b. If the load is constant-torque type, what is the motor speed when 3 ? resistance is added to the armature circuit? c. Calculate the motor speed if the field is reduced by 10%.
Mixing brake fluid types never causes any ill effects
Indicate whether the statement is true or false
Answer the following statement(s) true (T) or false (F)
1. The triac, like the SCR, must be phase shifted if complete control is to be gained over the AC voltage applied to it. 2. The UJT is an AC operated device. 3. The UJT can be used to supply the trigger pulses for the triac that needs both negative and positive pulses. 4. The capacitor cannot charge until the triac turns off at the end of the half cycle of alternating current. 5. The charge time of the capacitor is determined by the size of capacitor and the amount of resistance connected in series with it.