41) What should be the value of resistance between the contacts of a new thermostat at the lowest temperature setting of the control knob in heater ?

In kilo ohms

Zero ohm or few ohms

Infinity

High resistance in mega ohms

Answer is:

Zero ohm or few ohms

Thermostat contacts are welded together

Thermostat does not disconnect the heater from the supply

Open in the thermostat contacts

Thermostat set too high or out of calibration

Answer is:

Leakage around the thermostat

Thermostat setting is too low

Leakage around heating unit flange

Grounded heating element

Answer is:

Thermostat contacts are in open condition

Thermostat contacts are welded together

Thermostat is set in too high range

Thermostat does not disconnect the heater from the supply

Answer is:

inlet valve for its full open condition

correct water level in the tank

wiring connection for open circuit and loose connections

thermostat, for its welded contacts

Answer is: